On PPC64*, X_BYTE_ORDER was hardcoded to X_BIG_ENDIAN. Since the CPUs
support both modes and we actually intend to execute nxagent on ppc64le
as well, detect the actual endianess and add support for
Ppc64LeArchitecture.

Attributes GH PR #643: https://github.com/ArcticaProject/nx-libs/pull/643

Fix XSERVER64 should be _XSERVER64

It also reintroduces a missed hack (undocumented commandline switch
-disablexineramaextension to fool clients into thinking that Xinerama
is disabled even though it is not).

That hack had been dropped in d26930d5 intentionally.

These headers have been obsoleted in glibc and are not shipped by
default any longer. Fedora follows suit.

Attributes GH PR #642: https://github.com/ArcticaProject/nx-libs/pull/642

Fixes ArcticaProject/nx-libs#640

Attributes GH PR #626: https://github.com/ArcticaProject/nx-libs/pull/626

Attributes GH PR #655: https://github.com/ArcticaProject/nx-libs/pull/655

is done in WriteEventsToClient

This code was already existing in Xorg 6.6, but never in NX, for whatever reason.

debian/rules: Fix FTCBFS: (see Debian bug #875867) Fix build/host confusion in debian/rules. Pass --host to ./configure.

Attributes GH PR #637: https://github.com/ArcticaProject/nx-libs/pull/637

Reviewed-by: Ulrich Sibiller <uli42@gmx.de> --  Tue, 16 Jan 2018 06:03:18 -0800

hw/nxagent/Screen.c: Additionally check for noRRXineramaExtension set to FALSE before using the nxagentAdjustRandRXinerama() function and providing a Xinerama-like user experience.

 Fixes ArcticaProject/nx-libs#634.

nx-X11/config/cf/{gnu,lnx}Lib.rules: add RPATH entries for temporary nxcomp and nxcompshad libraries.

No change to the actually installed relinked nxagent(-relink) binary
that gets installed - only affects the temporary executable build
binary.