rebase miext/damage/ devPrivates backport

Author: sunweaver

nx-X11/programs/Xserver/miext/damage/damagestr.h

@@ -83,7 +83,7 @@ extern DevPrivateKeyRec damagePixPrivateKeyRec;
 extern DevPrivateKeyRec damageGCPrivateKeyRec;
 extern DevPrivateKeyRec damageWinPrivateKeyRec;
 
-/* XXX should move these into damage.c, damageScrPrivateIndex is static */
+/* XXX should move these into damage.c, damage<Xxx>PrivateKeyRec are static */
 #define damageGetScrPriv(pScr) ((DamageScrPrivPtr) \
     dixLookupPrivate(&(pScr)->devPrivates, damageScrPrivateKey))