nx-X11/programs/Xserver/Render.c: Re-introduce nxagentGlyphsCleanup() from libNX_Xrender's formerly removed XRenderGlyphsCleanup().

Fixes ArcticaProject/nx-libs#500

 This change improves the situation in nxagent for the following
 issue:

 ```
 "XRenderCompositeTrapezoids builds RenderTrapezoids requests to composite the
 specified list of trapezoids to dst.  XRenderCompositeTrapezoids will split
 the list of trapezoids to build requests no larger than the maximum request
 size supported by the server.  This can create rendering artifacts as the
 precompositing done by RenderTrapezoids when a maskFormat is specified
 cannot span multiple requests."
 ```

 For more information see:
 https://lists.freedesktop.org/archives/xorg/2008-June/036124.html

 Fixes ArcticaProject/nx-libs#336.

This way one can easily pass options to nxagent run as Xnest
replacement without having to create a temporary options file. Please
note that it is not of much use for normal sessions. Options passed
like this cannot be changed after startup so a reconnect may not work
as expected.

Fixes ArcticaProject/nx-libs#476

Do not use global variables where it is not necessary.

Fixes ArcticaProject/nx-libs#486

Report Xlib-side window IDs to session.log in machine readable form. This feature can be enabled by the cmdline options -reportwids and -reportprivatewids.

 In nxagent sessions, all X11 clients have a representation of their NX
 session-side window object on the real X-Server side.

 The window object gets stored in the new NX_REAL_WINDOW window property
 immediately after window creation. This mapping is created in
 nxagentCreateWindow().

 On session resumption, the client side window IDs normally change. Thus,
 during session resumption, all NX_REAL_WINDOW properties require being
 updated. This happens in nxagentReconnectWindow().

 While a session is suspended, the NX_REAL_WINDOW property does not
 exist. It gets removed during nxagentDisconnectWindow().

hw/nxagnet/Atoms.c: In DEBUG mode, we need validateString() which is not statically defined in Utils.h. Thus including it for DEBUG builds.

This fixes ArcticaProject/nx-libs#465

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

This reverts commit efc0dae0.

Recent test revealed keyboard hangs on high latency connections. These
hangs are not happening in 3.5.0 releases if the nx-libs.

The commit above is responsible for them so we take that back.

Interestingly nxcomp has special treatment for XGetKeyboardMapping()
so it should normally speed up things but it results in the opposite
for us. Needs further examination.

This fixes ArcticaProject/nx-libs#450

 Fixes ArcticaProject/nx-libs#383.

 This reverts commit 6c8c9502.

 Fixes ArcticaProject/nx-libs#433.

 This patch is still a candidate for being re-implemented without extending the
 _PictSolidFill struct, but for now, we'll have to re-introduce commit db8705
 for the sake of having fonts readable after resumption of remote NX sessions.

"nx-X11 Agent" looks and sounds ugly.

 - Move FONT_DEFINES and XLIBFONT definition to from Server.tmpl to
   Imake.tmpl.
 - Add FONT_DEFINES to ALLDEFINES.
 - Drop SpecialCObjectRules with FONT_DEFINES from various Imakefiles
   again, FONT_DEFINES is now set "globally".
 - Hand over FONT_DEFINES from main Makefile to nx-X11's make BuildEnv
   to make gccmakedep happy.

 Backported from X.org:

 commit f797c96845a3fab37cda6839ebecf9ac5401fd6e
 Author: Aaron Plattner <aplattner@nvidia.com>
 Date:   Thu Nov 15 12:12:02 2007 -0800

    Save pixmap allocation hints into the PixmapRec.
Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

 Backported from X.org:

 commit f2e310132fbe1520c1b5f3da4faa2d2d47835e72
 Author: Aaron Plattner <aplattner@nvidia.com>
 Date:   Wed Oct 31 14:15:35 2007 -0700

    Add CreatePixmap allocation hints.

    These hints allow an acceleration architecture to optimize allocation of certain
    types of pixmaps, such as pixmaps that will serve as backing pixmaps for
    redirected windows.
Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

 Fixes ArcticaProject/nx-libs#296.

 Inspired by the following X.org commit. Other than X.org, we will continue
 support for building nx-libs against libXfont1 for a while.

 commit 05a793f5b3c40747d5a92a076def7f4fb673c7e7
 Author: Keith Packard <keithp@keithp.com>
 Date:   Tue Sep 1 18:50:55 2015 -0700

    dix: Switch to the libXfont2 API (v2)

    This new libXfont API eliminates exposing internal X server symbols to
    the font library, replacing those with a struct full of the entire API
    needed to use that library.

    v2: Use libXfont2 instead of libXfont_2
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>

hw/nxagent/BitmapUtils.c: Derive from utilbitmap.c in deprecated libXfont1 and ship as copy-of-code with nxagent.

 Extracted from X.org bulk commit:

 commit 1f0e8bd5eb1a5539689cfc4f5a6b86b530907ec5
 Author: Dave Airlie <airlied@redhat.com>
 Date:   Tue Jun 5 13:22:18 2012 +0100

    api: rework the X server driver API to avoid global arrays.

    This is a squash merge containing all the API changes, as
    well as the video ABI bump.

    Its been squashed to make bisection easier.

    Full patch log below:

    [...]

    commit 06729dbbc804a20242e6499f446acb5d94023c3c
    Author: Dave Airlie <airlied@gmail.com>
    Date:   Tue Apr 10 14:04:59 2012 +0100

        xserver: remove index from CloseScreen (API/ABI breakage)

        This drops the index from the CloseScreen callback,
        its always been useless really, since the pScreen contains it.
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Acked-by: Aaron Plattner <aplattner@nvidia.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

The are now called reflecting their purpose:
viewport_scroll_left/up/right/down. This also regroups all the
keystrokes referring to viewport stuff.

no more late initialization