Integrate COMPOSITEWRAP branch including composite wrapper. This code still

has several issues, including:
- CopyWindow and PaintWindow wrappers missing (will be done soon)
- Some segfaults seen in the Render wrappers.
- Xprt server build breaks with Composite.
- DDXs must be recompiled for Composite due to VisualRec size change.
- Composite bugs pointed out by Deron Johnson in email.
Also, reorder XFixes initialization according to comments by Keith which
    are also in xserver CVS.

include/pixmapstr.h

@@ -79,6 +79,10 @@ typedef struct _Pixmap {
 #ifdef PIXPRIV
     DevUnion		*devPrivates; /* real devPrivates like gcs & windows */
 #endif
+#ifdef COMPOSITE
+    short		screen_x;
+    short		screen_y;
+#endif
 } PixmapRec;
 
 #endif /* PIXMAPSTRUCT_H */

include/scrnintstr.h

@@ -75,6 +75,10 @@ typedef struct _Visual {
 				 * it may have more or fewer */
     unsigned long	redMask, greenMask, blueMask;
     int			offsetRed, offsetGreen, offsetBlue;
+#ifdef COMPOSITE
+    unsigned long	alphaMask;
+    int			offsetAlpha;
+#endif
   } VisualRec;
 
 typedef struct _Depth {

include/windowstr.h

@@ -135,6 +135,9 @@ typedef struct _Window {
 #define DBE_BACK_BUFFER  0
     unsigned		dstBuffer:1;	/* destination buffer for rendering */
     unsigned		srcBuffer:1;	/* source buffer for rendering */
+#endif
+#ifdef COMPOSITE
+    unsigned		redirectDraw:1;	/* rendering is redirected from here */
 #endif
     DevUnion		*devPrivates;
 } WindowRec;