Fixes ArcticaProject/nx-libs#288.

 Fixes ArcticaProject/nx-libs#274.

 Fixes ArcticaProject/nx-libs#288.

 Fixes ArcticaProject/nx-libs#274.

is_numeric is only needed if X11_t is defined.

Silences "warning: ‘is_numeric’ defined but not used [-Wunused-function]"

warning: format ‘%p’ expects argument of type ‘void *’

This lifts xtrans to the state of this commit:
    commit 560d7550e23e9b14056b4a9b2569c2f256015f8a
    Author: Jeremy Huddleston Sequoia <jeremyhu@apple.com>
    Date:   Sat Sep 10 22:09:51 2016 -0700

        Update strlcpy macro check to also check HAVE_STRLCPY

        xorg-server moved from HAS_STRLCPY to HAVE_STRLCPY in 2011

        cf-xserver: d829a7c5cb42c979b58f3547136df5b05d906423
Signed-off-by: Jeremy Huddleston Sequoia <jeremyhu@apple.com>

Remove CLTS code

Never been used, as far as I can tell.
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>

this simplyfies updating to Xorg/xtrans upstream

"""

It's simply obsolete, sloppy, compiler namespace pollution.  The
compiler is not allowed to predefine symbols that might conflict with
ordinary identifiers.  For backwards compatibility gcc currently
predefines i386 when compiling for x86 32-bit (but not 64-bit), but that
will go away.  It is also not defined if you specify -ansi when invoking
the compiler, because then it is seriously standards compliant.  Other
compilers shouldn't define it either.  Correct code shouldn't rely on it
being defined.  However __i386__ is safe and proper.

"""
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>

empty lines and trailing whitespace

If your OS doesn't have sysconf(3), then life is already hard for you.
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>

just as Xorg upstream did

 Fixes ArcticaProject/nx-libs#250.

 This has already been started while replacing copyright info in file
 headers and has now been completed with this commit.

Per-file copyright notices: Update copyright information in file headers that NoMachine placed there own copyright statement in.

Fixes ArcticaProject/nx-libs#105

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

X11/nx-X11 clear-up: More places where we need to explicitly distinguish between X11 and nx-X11 namespace regarding header include paths.

 In the process of building nxagent against more and more system-wide installed
 X.org libraries, we come to the limit of including structs from this (bundled
 nx-X11) and that (system-wide X.Org) library.

 This commit introduces a clear namespace separation of headers provided by
 nx-X11 and headers provided by X.Org. This approach is only temporary as we
 want to drop all nx-X11 bundled libraries from nx-libs.

 However, for a while we need to make this separation clear and also ship
 some reduced fake X.Org headers that avoid pulling in libX* and libNX_X*
 symbols at the same time.

 This patch has been tested on Debian jessie and unstable and requires no
 overall testing on various distros and distro versions, as we finally will
 drop all libNX_X* libraries and build against X.org's client libs.

 For now, this hack eases our development / cleanup process.

old-arch cleanup: Drop CRAY support (i.e., drop code related to CRAY, _CRAY, WORD64, WORD64ALIGN, MUSTCOPY, UNSIGNEDBITFIELDS definitions).

  The below patch fixes more -Werror=format-security errors.
  Interestingly, most of the errors only showed up on our arm builds.  No
  idea why.

  Relevant code taken from xtrans 1.2.7 on 2014-06-11.