Xserver/os/oscolor.c: Follow X.org in dropping the rgb.txt file entirely. Content of that file is now hard-coded.

 Adopting an exact copy of os/oscolor.c from X.org leads to this compiler warning:

 ```
 oscolor.c:844:1: warning: string length ‘7614’ is greater than the length ‘4095’ ISO C99 compilers are required to support [-Woverlength-strings]
 };
 ^
 ```

 This will be address later in coordination with X.org.

 Note: there is a tiny change in oscolor.c as we ship it. The original X.org file includes <X11/keysym.h> which seems
 unneeded. We drop that one line from oscolor.c.

 Fixes ArcticaProject/nx-libs#259.

Attributes GH PR #338: https://github.com/ArcticaProject/nx-libs/pull/338

The following commit turned out to be incomplete. This commit makes it
complete by removing client->lastDrawable/lastGC everywhere thus
fixing ArcticaProject/nx-libs#306 and #322

    commit e6f2f642
    Author: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
    Date:   Mon Jun 20 16:45:38 2016 +0200

        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>

Attributes GH PR #329: https://github.com/ArcticaProject/nx-libs/pull/329

 Backported from X.org:

 commit 6c46645cfc1afda8aeabfe0ed4d9342673b702f1
 Author: Eamon Walsh <ewalsh@tycho.nsa.gov>
 Date:   Thu Dec 14 14:45:42 2006 -0500

    Naming change: Security*Access -> Dix*Access
Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

Merge branch 'sunweaver-pr/use-xgetkeyboardMapping-instead-of-deprecated-xkeycodetokeysym' into 3.6.x

Attributes GH PR #335: https://github.com/ArcticaProject/nx-libs/pull/335

Reviewed by: Ulrich Sibiller <uli42@gmx.de>  -- Fri, 17 Feb 2017 06:49:03 -0800

Switch from using libNX_X11's deprecated XKeycodeToKeysym() function to using XGetKeyboardMapping().

 Fixes ArcticaProject/nx-libs#229.

Attributes GH PR #330: https://github.com/ArcticaProject/nx-libs/pull/330

 Backported from X.org:

 commit 9f9268821b13038556fbc029df54ab0e9b2aa77f
 Author: Mathieu Bérard <mathieu.berard@crans.org>
 Date:   Mon Aug 11 13:52:38 2008 -0400

    The smart scheduler is not optional.
Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

Attributes GH PR #313: https://github.com/ArcticaProject/nx-libs/pull/313

Makefile: Fix flawed uninstall-* targets. Spotted by Ionic while reviewing the nxagent RPATH changeset. Thanks!

debian/patches: Update 016_nx-X11_install-location.debian.patch. Adapt path to recent upstream changes.

Load libNX_X11 / faked libX11 via RPATH setting rather than fidgeting with LD_LIBRARY_PATH in the nxagent wrapper script.

 Fixes ArcticaProject/nx-libs#225.

  SHLIBDIR -> Points to the system's official library folder.
  USRLIBDIR -> In NX, this variable (amongst others) is used to set
               the executables RPATH (if enabled), so pointing this
               to SHLIBDIR/nx-X11.

debian/rules: Don't manually override SHLIBDIR via the dh_auto_build call. The default in the main Makefile should work fine.

nx-libs.spec: Don't manually override SHLIBDIR via the .spec file. The default in the main Makefile should work fine.

Makefile: Align variable names USRLIBDIR, SHLIBDIR (and NX_DIR) with nx-X11 internal naming schemes (and use /usr/<lib>/nx/X11 rather than /usr/<lib>/nx-X11).

Attributes GH PR #289: https://github.com/ArcticaProject/nx-libs/pull/289

nx-X11/include/Xos_r.h: Drop one _POSIX_REENTRANT_FUNCTIONS macro block, where offenders AIXV3, AIXV4 and __osf__ are gone now.

 Backported from X.org:

 From f93d10ce9bb4a6de83b561f44fb7b046def16234 Mon Sep 17 00:00:00 2001
 From: Daniel Stone <daniel@fooishbar.org>
 Date: Mon, 6 Nov 2006 18:33:45 +0200
 Subject: dix: remove staggeringly broken vendor workarounds
Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

 Relates to ArcticaProject/nx-libs#275.

 Relates to ArcticaProject/nx-libs#275.

 Relates to ArcticaProject/nx-libs#275.

 Fixes ArcticaProject/nx-libs#288.

 Fixes ArcticaProject/nx-libs#274.

 Fixes ArcticaProject/nx-libs#273.

 Fixes ArcticaProject/nx-libs#272.

 Fixes ArcticaProject/nx-libs#271.

Attributes GH PR #323: https://github.com/ArcticaProject/nx-libs/pull/323

Fixes ArcticaProject/nx-libs#293

Attributes GH PR #315: https://github.com/ArcticaProject/nx-libs/pull/315

debian/copyright{,.in}: Adopt from Debian's upload candidate, being DEP-5 compliant and up-to-date for 3.5.99.3.

 Fixes ArcticaProject/nx-libs#2.

Makefile: Don't create superfluous symlink for libX11.so -> ../libNX_X11.so. The libNX_X11.so is only required at build time, so need to use it for faking libX11.so in nxagent.

 Fixes ArcticaProject/nx-libs#286.

 Fixes ArcticaProject/nx-libs#303.

Attributes GH PR #307: https://github.com/ArcticaProject/nx-libs/pull/307