include/extensions: Xag.h, Xagsrv.h, Xagstr.h
  Xserver/Xext: appgroup.c, appgroup.h
  lib/Xext: XAppgroup.c

  include/extensions: Xcup.h, Xcupstr.h,
  Xserver/Xext: cup.c
  lib/Xext: cup.c

  include/extensions: Xdbe.h
  Xserver/Xext: Xdbe.c

  Xserver/Xext:  dgaproc.h, xf86dga.c, xf86dga2.c, xf86dgaext.h

  include/extensions: Xevie.h, Xeviestr.h
  include/extensions: XEVI.h, XEVIstr.h
  Xserver/Xext: EVI.c, EVIstruct.h, sampleEVI.c
  lib/Xext: XEVI.c

  include/extensions: fontcache.h, fontcacheP.h, fontcachstr.h
  Xserver/Xext: fontcache.c

  include/extensions: lbxbuf.h, lbxbufstr.h, lbxdeltastr.h, lbximage.h, lbxopts.h, lbxstr.h, lbxzlib.h
  lib/Xext: XLbx.c

  include/extensions: multibuf.h, multibufst.h
  lib/Xext: XMultibuf.c
  Xserver/Xext: mbuf.c, mbufbf.c, mbufpx.c

  include/extensions: xf86vmode.h, xf86vmstr.h
  Xserver/Xext: vidmodeproc.h, xf86vmode.c

  lib/Xext: MITMisc.c
  Xserver/Xext: mitmisc.c

  Xserver/Xext: xf86misc.c, xf86miscproc.h

  Xserver/XTrap: xf86XTrapModule.c, xtrapddmi.c, xtrapdi.c, xtrapdiswp.c, xtrapditbl.c
  include/extensions: xtrapbits.h xtrapddmi.h xtrapdi.h xtrapemacros.h xtraplib.h xtraplibp.h xtrapproto.h
  Fixes: ArcticaProject/nx-libs#116
  X.org: https://cgit.freedesktop.org/xorg/xserver/commit/?id=cbc20d92de92aad5ca240310a9156ccf97c24a01

  Plus: Drop various Imake'ish defines where not needed anymore.

Fix debugging function for Loop.cpp. getDebugSpec was replaced by << operand in ChannelEndPoint.{h|cpp}, fixes #130

nx-X11/programs/Xserver/{hw/nxagent/NX,render/}picture.c: add and use new function ReduceCompositeOp().

More or less just an optimization for more "trivial" composite operations
requiring less work, but syncs up the newer X.Org Server and nx-libs a bit
more.

nx-X11/programs/Xserver/composite/Imakefile: add new file to SRCS and OBJS and define -DNXAGENT_SERVER while building the Composite extension to disable some code that depends upon a newer X.Org architecture.

misc nx-X11/{programs/Xserver/composite,include/extensions}: update to Composite 0.4 - with changes where neccessary and rough edges.

nx-X11/programs/Xserver/{dix/{colormap.c,window.c},hw/nxagent/NXwindow.c,include/{colormap,window{,str}}.h}: backport features needed for Composite 0.4.

nx-X11/programs/Xserver/{hw/nxagent/NX,render/}picture.c: add and use new function ReduceCompositeOp().

More or less just an optimization for more "trivial" composite operations
requiring less work, but syncs up the newer X.Org Server and nx-libs a bit
more.

nx-X11/programs/Xserver/composite/Imakefile: add new file to SRCS and OBJS and define -DNXAGENT_SERVER while building the Composite extension to disable some code that depends upon a newer X.Org architecture.

misc nx-X11/{programs/Xserver/composite,include/extensions}: update to Composite 0.4 - with changes where neccessary and rough edges.

nx-X11/programs/Xserver/{dix/{colormap.c,window.c},hw/nxagent/NXwindow.c,include/{colormap,window{,str}}.h}: backport features needed for Composite 0.4.

Attributes GH PR #102: https://github.com/ArcticaProject/nx-libs/pull/102

 Amends the following compiler warning

 Display.c: In function ‘nxagentMakeIcon’:
 Display.c:1949:18: warning: assignment from incompatible pointer type
      agentIconData=x2goagentIconData;
                  ^
 Display.c:1954:18: warning: assignment from incompatible pointer type
      agentIconData=nxagentIconData;
                  ^
 Display.c:2001:41: warning: passing argument 3 of ‘XpmCreatePixmapFromData’ from incompatible pointer type
                                          agentIconData,
                                          ^
 In file included from Icons.h:22:0,
                  from Display.c:67:
 X11/include/xpm_nxagent.h:242:6: note: expected ‘char **’ but argument is of type ‘char *’
  FUNC(XpmCreatePixmapFromData, int, (Display *display,
       ^
 X11/include/xpm_nxagent.h:230:32: note: in definition of macro ‘FUNC’
  #define FUNC(f, t, p) extern t f p

hw/nxagent/Display.c: Define Pixmap from XlibPixmap before including Icons.h (which includes hw/nxagent/X11/include/xpm_nxagent.h).

hw/nxagent/Holder.c: Define Pixmap from XlibPixmap before including hw/nxagent/X11/include/xpm_nxagent.h.

 Amends the following compiler warnings:

 ```
 NXmiexpose.c:904:18: warning: ‘newValues[2].ptr’ may be used uninitialized in this function [-Wmaybe-uninitialized]
    gcval[i++].ptr = newValues[TILE].ptr;
                   ^
 NXmiexpose.c:914:24: warning: ‘newValues[1].val’ may be used uninitialized in this function [-Wmaybe-uninitialized]
       if ( pGC->fgPixel != newValues[FOREGROUND].val) {
                         ^
 ```

 Amends the following compiler warning:

 ```
 Window.c: In function ‘nxagentSetTopLevelEventMask’:
 Window.c:3392:31: warning: ‘attributes.event_mask’ may be used uninitialized in this function [-Wmaybe-uninitialized]
      Mask tmp_mask = attributes.event_mask;
                                ^
 ```

 Amends the following compiler warning:

 ```
 Colormap.c: In function ‘nxagentReconnectAllColormap’:
 Colormap.c:575:7: warning: variable ‘flexibility’ set but not used [-Wunused-but-set-variable]
    int flexibility;
        ^
 ```

 Amends the following compiler warning:

 ```
 GCOps.c: In function ‘nxagentCopyArea’:
 GCOps.c:597:7: warning: variable ‘oldDstxyValue’ set but not used [-Wunused-but-set-variable]
    int oldDstxyValue;
        ^
 ```

 Amends the following compiler warning:

 ```
 GC.c: In function ‘nxagentReconnectAllGCs’:
 GC.c:1154:7: warning: variable ‘flexibility’ set but not used [-Wunused-but-set-variable]
    int flexibility;
        ^
 ```

hw/nxagent/Events.c: Only declare and assign message_data and box variables if compiled with -DTEST / -DDEBUG (plus drop commented out code).

 Amends the following compiler warnings:

 ```
 Events.c: In function ‘nxagentHandleClientMessageEvent’:
 Events.c:2694:13: warning: variable ‘message_data’ set but not used [-Wunused-but-set-variable]
        char *message_data;
              ^
 Events.c: In function ‘nxagentClipAndSendExpose’:
 Events.c:4313:10: warning: variable ‘box’ set but not used [-Wunused-but-set-variable]
    BoxRec box;
           ^
 ```

 Amends the following compiler warnings:

 ```
 Display.c: In function ‘nxagentReconnectDisplay’:
 Display.c:2449:19: warning: variable ‘packQuality’ set but not used [-Wunused-but-set-variable]
    int packMethod, packQuality;
                    ^
 Display.c:2449:7: warning: variable ‘packMethod’ set but not used [-Wunused-but-set-variable]
    int packMethod, packQuality;
        ^
 ```

 Amends the following compiler warning:

 ```
 NXrender.c: In function ‘swapStops’:
 NXrender.c:3036:13: warning: variable ‘colors’ set but not used [-Wunused-but-set-variable]
      CARD16 *colors;
              ^
 ```

 We don't define HAVE_STDINT_H anywhere and it should be more safe using
 the system's definition of UINT32_MAX.

 This requires adaptations of arguments' types for the external
 references to MakeAtom() and CopyISOLatin1Lowered().

 These adaptations have been required in Xserver/include/dix.h,
 Xserver/include/dixfonts.c Xserver/dix/atom.c, Xserver/dix/dixutils.c,
 Xserver/os/oscolor.c.

hw/nxagent/NXdixfonts.c: Don't include <X11/fonts/fontstruct.h>. No symbol needed from that header file.

 Amends the following compiler warnings:

 ```
 NXpicture.c: In function ‘nxagentReconnectPictFormat’:
 NXpicture.c:2148:9: warning: variable ‘pBool’ set but not used [-Wunused-but-set-variable]
    Bool *pBool;
         ^
 NXpicture.c:2147:17: warning: variable ‘pFormat’ set but not used [-Wunused-but-set-variable]
    PictFormatPtr pFormat;
                  ^
 ```

 Amends the following compiler warning:

 ```
 NXglyphcurs.c: In function ‘ServerBitsFromGlyph’:
 NXglyphcurs.c:109:17: warning: variable ‘gcval’ set but not used [-Wunused-but-set-variable]
     ChangeGCVal gcval[3];
                 ^
 ```

 Amends the following compiler warning:

 ```
 Keyboard.c: In function ‘nxagentKeyboardProc’:
 Keyboard.c:688:7: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
    int ret;
        ^
 ```

 Amends the following compiler warning:

 ```
 Handlers.c: In function ‘nxagentShadowBlockHandler’:
 Handlers.c:732:7: warning: variable ‘result’ set but not used [-Wunused-but-set-variable]
    int result;
        ^
 ```

 Amends the following compiler warning:

 ```
 Keyboard.c: In function ‘nxagentNotifyKeyboardChanges’:
 Keyboard.c:1211:16: warning: variable ‘xkb’ set but not used [-Wunused-but-set-variable]
      XkbDescPtr xkb;
                 ^
 ```