PAINT ROLLER GRADUABLE STRUCTURE Field of the Invention This invention relates in general to a paint roller structure that is adjustable to several different positions to allow the coating of the paint roller supported by it to reach difficult faces and angles of a painting surface. such as lattices, cabinets, pipes, counter frames and the like. BACKGROUND OF THE INVENTION It is generally known to provide an adjustable connection between the handle and the handle portion of a paint roller structure which allows the coating of the paint roller to be placed in a desired angular relationship with the handle so that the user Do not have to hold the structure at an uncomfortable angle when painting the sloping surfaces. However, it is often difficult and time-consuming to make such angular adjustments. Also, frequently, the adjustable connection and the shape of the handle portion do not allow the roller cover to be used to paint between and behind the areas of a painting surface such as the lattices, the cabinets, the pipes and the walls. Counter frames where there is narrow access. SUMMARY OF THE INVENTION In accordance with one aspect of the present invention, there is provided a paint roller in which the paint roller cover can be easily rotated to several different positions relative to the handle whenever desired for the painting surfaces with different angles and narrow access such as lattices, cabinets, pipes, counter frames and the like. According to another aspect of the invention, the handle supporting the paint roller cover is held securely in any desired adjusted position and the position of the handle can still be easily changed at any time. In accordance with. Another aspect of the invention, the handle is rotatable about an axis towards any of a plurality of positions that they see in different directions over 360 °. In accordance with another aspect of the invention, a releasable spring mechanism retains the handle in any desired adjusted position. According to another aspect of the invention, the spring mechanism is hidden from view and protected from paint splash. In accordance with another aspect of the invention, the paint roller structure is inexpensive to manufacture and can be bent into a compact package in which the external portion of the handle that rotatably supports the roller cover lies on the handle in a closely spaced relationship to allow that the structure fits easily in a tray or paint vault and minimize the space requirements for mounting or deploying the structure on a dispenser or the like. These and other objects, advantages, features and aspects of the present invention will become apparent as the following description proceeds. For the fulfillment of the foregoing and the related purposes, the invention then comprises the features completely described hereinafter and particularly pointed out in the claims, the following description and the annexed drawings that establish in detail a certain illustrative embodiment of the invention, being indicative, however, of one of several ways in which the principles of the invention may be employed. BRIEF DESCRIPTION OF THE DRAWINGS In the accompanying drawings: Figure 1 is a side elevational view of a preferred form of the paint roller structure according to the present invention; Figure 2 is a top plan view of the paint roller structure of Figure 1; Figure 3 is a top plan view of the paint roller structure similar to Figure 2 but showing the outer handle portion on which the paint roller cover is rotatably supported oriented at a position 90 ° different from that shown in FIG. Figure 2; Figure 4 is a fragmentary, elongated longitudinal section through the paint roller structure handle of Figure 1 showing the mechanism for releasably retaining the external handle portion in any of a plurality of discrete positions they see in different directions on 360 °; and Figure 5 is a fragmentary longitudinal section through the handle of structure similar to Figure 4 but showing the handle in an open condition that allows the handle to be rotated in any direction about its central axis to position the handle portion external in any of a plurality of discrete positions that they see in different directions over 360 °. DETAILED DESCRIPTION OF THE PREFERRED MODE Referring now in detail to the drawings, and initially to Figures 1 to 3, there is shown a preferred form of paint roller structure 1 according to this invention that includes a handle 2 and a wire handle 3 connected thereto to support a paint roller cover 4. As described in detail hereinafter, the handle 3 is rotatable relative to the handle 2 to allow the roller cover to be oriented in different positions relative to the handle in order to allow the roller cover to be used to reach the difficult faces and angles of a painting surface and also between and behind areas of a painting surface such as lattices, cabinets, columns, pipes, counter frames and Similary. Of course, when used for such purpose, the paint roller cover should be of a size that allows access of the roller cover to relatively narrow spaces. For this purpose, the roller cover can have a core diameter of for example about half an inch and a length of about six and a half inches. Also, the roller cover can have hair heights that vary, for example, from one-quarter to one-half inch. However, it will be apparent that the roller structure can be designed to accommodate roller covers having other core diameters and lengths as well as other pile heights if desired. The roller cover 4 slides on the outer end 5 of the handle 3 and can be held removable in place by any suitable manner. The structure handle 2 includes a manual handle ß which may have a threaded adapter 7 snapped into the external end thereof to allow the structure to be used with all standard threaded extension poles. Also, if desired, the adapter 7 may be provided with a non-circular recess of larger diameter adjacent to its outer end to establish an anti-rotation connection with a quick release latch mechanism of the type set forth, for example, in FIG. U.S. Patent 5,288,161 assigned to the same assignee of the present invention, the disclosure of which is incorporated herein by reference. At the inner end of the handle 2 is a body portion 8 which, as best seen in Figures 4 and 5, extends radially outward from the manual grip 6 and contains a radial perforation 9 through which the inner end 10 of the wire handle 3 extends. Preferably, the hand grip 6 and the body portion 8 are integrally molded as a piece of a suitable plastic such as polypropylene which is impervious to most solvents, even after of prolonged soaking. The intermediate portion 11 of the wire handle 3 (e.g., the portion between the end portions, external and internal, 5 and 10) has three right angle curves that give the handle a total configuration generally in the form of an S shape. right angle curves 12 is adjacent to the outer end of the radial body portion 8 and joins the inner handle portion 10 to a radial tip 15 of the portion intermediate 11. This radial tip 15 is selectively clisable in any of a plurality of circumferentially spaced radially extending slots or grooves 16 in the body portion 8 surrounding the outer end of the perforation 9 as described hereinafter. At the outer end of the radial tip 15 is another of the right angle curves 17 joining the radial tip 15 to an axial tip 18 of the intermediate portion 11 extending generally parallel to the axis of the radial perforation 9. In the The external end of the axial tip 18 is the third right-angled curve 19 which further extends radially outwardly relative to the axis of the bore 9 in the body portion 8 and joins the outer end of the axial tip 18 to the outer end. of the handle 3 on which the roller cover 4 is rotatably mounted. Within the handle body portion 8 there is a reaming hole 20 containing a compression spring 21 through which a portion of the inner end 10 of the handle extends. of wire 3. The spring 21 is captured between a bracket 22 at the inner end of the reamed hole 20 and a button 23 snapped onto the innermost end 24 of the handle, whereby the spring urges the radial tip 15 of the intermediate portion 11 in clutch with one of the notches 16 in the radial outer end of the handle body 8. The inner end 10 of the handle 3 has a length sufficiently greater than the length of the handle body 8 to allow the button 23 to snap into the innermost end thereof. A recess 25 in the inner end of the body 8 in coaxial alignment with the reamed hole 20 receives the button 23 when the button is pushed in against the force of the spring 21. The recess 25 has a diameter only slightly larger than the diameter of the button 23 whereby the button 23 hides the spring 21 and the inner end of the handle 10 from the view and also prevents the splash of paint and the like from entering the recess and over the spring. The orientation or position of the outer end 5 of the wire handle 3 and therefore the roller cover 4 supported thereby with respect to the handle 2 can easily be changed at any time simply by pushing the spring-loaded button 23 inwards in the recess 25 at the inner end of the body with the thumb of the user at a distance sufficient to disengage the radial tip 15 of the intermediate handle portion 11 from one of the notches or grooves 16 at the external end of the body as shown schematically in Figure 5. This allows the radial tip 15 to rotate smoothly in any direction around its inner end 10 towards any of the various discrete positions in overlap relation with either of the notches 16. When the pushing force is released in the button 23, the spring 21 will once again move the radial tip 15 of the intermediate handle portion 11 toward an associated notch 16 to fix positively the handle 3 in any desired, graduated position, which securely holds the roller cover 4 in place during use. Although the number and angular spacing of the grooves 16 in the radial outer end of the handle body 8 may vary as desired, in the preferred embodiment disclosed herein, four such grooves 16 are provided, each substantially 90 ° apart about from the periphery of the perforation 9. Two of the notches 16 desirably extend in opposite directions in axial alignment with the longitudinal axis of the handle 2 as shown schematically in figures 2 and 3, while the other two notches 16 they desirably extend in opposite directions substantially perpendicular to the axis of the handle as also schematically shown in Figures 2 and 3. This allows the outer end 5 of the wire handle 3 on which the roll cover 4 is mounted to be graduated in four different positions with respect to the longitudinal axis of the handle 2, as follows: 1. It extends axially forward in a separate relationship parallel with the axis of the handle, as shown in solid lines in figures 1, 2, 4 and 5; 2. Extends axially towards the rear in parallel relation to the axis of the handle as shown in dotted lines in Figures 1, 2 and 5; 3. Extends substantially perpendicular to the axis of the handle in one direction (eg, to the left as seen from the rear of the handle) radially spaced therefrom as shown in solid lines in Figure 3; and 4. Extends substantially perpendicular to the axis of the handle in the opposite direction (eg, to the right) radially spaced from it as shown in dashed lines in Figure 3. It has been generally found that these four positions are all those necessary to allow the paint roller structure 1 of the present invention to be used as a multi-purpose tool for painting flat surfaces as well as surfaces with many different angles and narrow access, including lattices, cabinets, pipes, columns and counter frames , to name a few. Also, the ability to adjust the structure 1 so that the outer handle portion 5 and the associated roller cover 4 extend toward the rear in a separate, parallel, overlap relationship to the hand grip 6 as shown in FIG. dotted lines in Figures 1, 2 and 5, provides several versatile possibilities of distributing in this particular orientation of the wire handle relative to the handle and requires very little space for mounting the structure on a honeycomb panel of a dispenser or the similar. In one form of the invention, when the structure 1 is graduated / bent in this way with the external handle portion 5 and the roller cover 4 extending rearwardly on the manual handle 6, the structure is approximately five inches wide from the handle to the handle. When lying flat in this position, the structure will also fit easily into a paint tray or shelf. Although the invention has been shown and described with respect to a certain preferred embodiment, it is obvious that alterations and modifications will occur equivalent to those skilled in the art after reading and understanding the specification. The present invention includes all such alterations and equivalent modifications and is limited only by the scope of the claims.