dix/randr: add a hooks into screen to (a) replace scanout pixmap and (b) for additional cursor confinement

 Backported from X.org:

 commit c41922940adbc8891575b3321fadf01ff4cb5854
 Author: Dave Airlie <airlied@redhat.com>
 Date:   Tue Jun 26 10:00:21 2012 +0100

    dix/randr: add a hook into screen to replace scanout pixmap

    For DRI2 in some offload cases we need to set a new pixmap on the crtc,
    this hook allows dri2 to call into randr to do the necessary work to set
    a pixmap as the scanout pixmap for the crtc the drawable is currently on.

    This is really only to be used for unredirected full screen apps in composited
    environments.
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

 commit e65c3f8bcc86845f21ac575e2bfb4b21b67d5ebf
 Author: Adam Jackson <ajax@redhat.com>
 Date:   Wed Jan 5 12:04:19 2011 -0500

    dix: Add a Screen method for additional cursor confinement

    This just reserves the slot in the ABI. Confining cursors to CRTCs will
    come soon.

    v2: Just reserve the slot.
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Signed-off-by: Adam Jackson <ajax@redhat.com>

 Backport to nx-libs: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

 Backported from X.org:

 commit 0df871cf34ee5f1a85586206027de9b02fb364ec
 Author: Robert Ancell <robert.ancell@canonical.com>
 Date:   Thu May 22 10:43:52 2014 +1200

    Fix overflow checking extension versions

    The easiest way to check for the version of an extension is to send the maximum
    possible version numbers in the QueryVersion request. The X server overflows on
    these as it assumes you will send a reasonable version number.
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>

 commit ffd4874798ba54f86acac75779a15b4babeaa5f3
 Author: Peter Hutterer <peter.hutterer@who-t.net>
 Date:   Wed May 11 12:20:50 2011 +1000

    include: add version_compare helper function

    Compare two version numbers in the major.minor form.
    Switch the few users of manual version switching over to the new function.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jamey Sharp <jamey@minilop.net>

 Backport to nx-libs: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

 Backported from X.org:

 commit acda790e430b2a18c7c35379f6e538f3d01ff221
 Author: Keith Packard <keithp@keithp.com>
 Date:   Fri Mar 14 13:46:30 2008 -0700

    [render] Split out filter finding from filter setting.

    To prepare for RandR using filters in transforms, split out
    code paths so that the RandR code can validate the filter name and
    parameters during the transform set operation so that use of the filter
    later will not have unreportable errors.

 Backport to nx-libs: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

debian/patches-pending-evaluation: Adapt fix-icon-and-clipboard.patch to removal of the WindowTable array.

hw/nxagent/NXresource.c: remove caching of drawables and graphics contexts. The security checks simply bypass the cached values so they are unused. Required code de-duplication in nxagent. (Will be fixed by ArcticaProject/nx-libs#120 later on).

dix: remove caching of drawables and graphics contexts. The security checks simply bypass the cached values so they are unused.

 Backported from X.org:

 commit 9a183d7ba50e31afa133cc03aee7991517a283ea
 Author: Eamon Walsh <ewalsh@tycho.nsa.gov>
 Date:   Tue Aug 14 11:39:26 2007 -0400

    dix: remove caching of drawables and graphics contexts.  The security checks
    simply bypass the cached values so they are unused.

 Backport to nx-libs: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

 Backported from X.org:

 commit e7fae9ecc42ab5e73b89117722dbf4117d928f9a
 Author: Jamey Sharp <jamey@minilop.net>
 Date:   Sat May 22 00:26:28 2010 -0700

    Move each screen's root-window pointer into ScreenRec.

    Many references to the WindowTable array already had the corresponding
    screen pointer handy, which meant they usually looked like
    "WindowTable[pScreen->myNum]". Adding a field to ScreenRec instead of
    keeping this information in a parallel array simplifies those
    expressions, and eliminates a MAXSCREENS-sized array.

    Since dix uses this data, a screen private entry isn't appropriate.

    xf86-video-dummy currently uses WindowTable, so it needs to be updated
    to reflect this change.
Signed-off-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Tiago Vignatti <tiago.vignatti@nokia.com>
    Tested-by: Tiago Vignatti <tiago.vignatti@nokia.com> (i686 GNU/Linux)

 Backport to nx-libs: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

 Backported from X.org:

 commit 64ef7ed072007b1d0b4de5ff1e5eababa418c794
 Author: Adam Jackson <ajax@redhat.com>
 Date:   Wed Aug 20 13:14:03 2008 -0400

    Centralize declaration of ConnectionInfo.

Author: Adam Jackson <ajax@redhat.com>
Backport to nx-libs: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

nxagent/hw/NXextension.c: Allow CloseDownProc to be NULL. Required code de-duplication in nxagent. (Will be fixed by ArcticaProject/nx-libs#120 later on).

 Backported from X.org:

 commit ae67508392261ae47858692668a0c192ef4a9d7b
 Author: Mathieu Bérard <mathieu.berard@crans.org>
 Date:   Fri Jul 25 10:05:30 2008 -0400

    Fix AddExtension now that CloseDownProc can be NULL.

 commit 6bcde69585fcc8f8dbfe81c115649f19274922fa
 Author: Adam Jackson <ajax@redhat.com>
 Date:   Thu Jul 24 09:13:26 2008 -0400

    Allow extension closedown hook to be null.

Authors: Adam Jackson <ajax@redhat.com>
         Mathieu Bérard <mathieu.berard@crans.org>
Backport to nx-libs: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

 The reformatting has been achieved by applying
 x-indent.sh to all .c and .h files in Xserver/randr/.

 sed -i "s/[ ]\+$//g" randr/*.{c,h}

 happy reviewing...
 git diff -w is an empty diff.

 This isn't used anywhere, not least because it's completely
 nonfunctional.
Reviewed-by: Mikhail Gusarov <dottedmag@dottedmag.net>
Signed-off-by: Adam Jackson <ajax@redhat.com>
 Backported-to-NX: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

Properly enable/disable Xinerama support in nxagent via cmdline options provider in Xserver/os/utils.c.

  * Xinerama defaults to enabled, using RRXineramaExtension
    (i.e. cmdline option: +rrxinerama).
  * Cmdline option -rrxinerama disables Xinerama support entirely.
  * Cmdline option +xinerama switches from RRXineramaExtension to
    PanoramiXExtension.
  * Cmdline option -xinerama is actually non-functional (i.e. the
    default).
  * If the nx/nx option "xinerama" is handed over to nxagent,
    then Xinerama is only switched on if that given option enables it
    (value: 1) _and_ if either of the Xinerama extensions (PanoramiX
    or RRXinerama) has been initialized (via cmdline options above).

 Fixes ArcticaProject/nx-libs#117.
 Fixes ArcticaProject/nx-libs#134 (makes flawed PR#134 obsolete).

{nx-X11/programs/Xserver/hw/nxagent/{{Args,Handlers,Image,Options}.c,Options.h},nxcomp/{Loop,Misc}.cpp}: add configurable sleep delay if session is suspended.

nxagentReversePointerMap: Don't assume Xevent.xbutton.button is always greater than zero. We have seen Xevent.xbutton.button being set to AnyButton (equaling 0).

Fixes ArcticaProject/nx-libs#92
Fixes X2GoBTS#791

nx-X11/programs/Xserver/hw/nxagent/Handlers.h: fix stack smashing related to different data type sizes between Xserver and Xlib.

While on the X server side we were expecting a 32bit value, the Xlib side in
nxcompext wrote a 64bit integer to the 32bit location, hence overwriting
"random" data on the stack (most notably the return adress.)

We can work around this by using the Xlib-based Window data type on the
server-side as well, but this problem is likely a more general one.

Calling functions from libcompext in nxagent sounds like a bad idea. Other code
locations might well be affected by issues alike to that as well.

In order to silence compiler warnings, use a "macro hack" for overriding the
"Window" type in NXlib.h.

nx-X11/programs/Xserver: Include nxcomp{,ext,shad} headers like one would do with system-wide shared libraries.

nxcomp/Makefile.in: Only install MD5.h, NX.h, NXalert.h, NXpack.h, NXproto.h and NXvars.h as publicly available header files.

 * Also adapt debian/libxcomp-dev.install.in accordingly.
 * Also adapt nx-libs.spec accordingly.

 * Also adapt debian/libxcompshad-dev.install.in accordingly.
 * Also adapt nx-libs.spec accordingly.

nx-X11/programs/Xserver/Imakefile: Don't overlink nxagent. Linking against libXrandr and libXtst is not necessary for nxagent.

Fixes ArcticaProject/nx-libs#110.

nx-X11/config/cf/lnxLib.tmpl requires post-library removal cleanup: Drop references to dropped X11 extension client libraries.

Fixes ArcticaProject/nx-libs#115.

Attributes GH PR #106: https://github.com/ArcticaProject/nx-libs/pull/106