Kill off --with-mesa-source completely

There were a few spots left in the source that were using the
--with-mesa-source defined headers or the now removed $(top_srcdir)/GL
directory. These aren't needed anymore as all the necessary source for
GLX is in $(top_srcdir)/glx.

Signed-off-by: Dan Nicholson <dbn.lists@gmail.com>

configure.ac

@@ -517,9 +517,6 @@ AC_ARG_ENABLE(visibility,     AC_HELP_STRING([--enable-visibility], [Enable symb
 				[SYMBOL_VISIBILITY=auto])
 
 dnl GLX build options
-AC_ARG_WITH(mesa-source,     AS_HELP_STRING([--with-mesa-source=MESA_SOURCE], [Path to Mesa source tree]),
-                                [ MESA_SOURCE="$withval" ],
-                                [ MESA_SOURCE="" ])
 AC_ARG_WITH(dri-driver-path,  AS_HELP_STRING([--with-dri-driver-path=PATH], [Path to DRI drivers (default: ${libdir}/dri)]),
 				[ DRI_DRIVER_PATH="$withval" ],
 				[ DRI_DRIVER_PATH="${libdir}/dri" ])
@@ -844,7 +841,6 @@ else
         GLX=no
 fi
 AM_CONDITIONAL(GLX, test "x$GLX" = xyes)
-AC_SUBST([MESA_SOURCE])
 
 if test "x$AIGLX" = xyes -a "x$GLX" = xyes -a "x$DRI" = xyes; then
 	AC_DEFINE(AIGLX, 1, [Build AIGLX loader])

hw/dmx/glxProxy/Makefile.am

@@ -36,9 +36,6 @@ AM_CFLAGS = \
             $(DIX_CFLAGS) \
             -I$(top_srcdir)/hw/dmx \
             -I$(top_srcdir)/include \
-            -I$(top_srcdir)/GL/include \
-            -I$(top_builddir)/GL/include \
-	    -I@MESA_SOURCE@/include \
             -DHAVE_DMX_CONFIG_H \
             @DMXMODULES_CFLAGS@ \
             -I$(top_srcdir)/hw/xfree86/os-support

hw/xfree86/dri/Makefile.am

@@ -8,8 +8,6 @@ libdri_la_CFLAGS = -I$(top_srcdir)/hw/xfree86/common \
                    -I$(top_srcdir)/hw/xfree86/ramdac \
                    -I$(top_srcdir)/hw/xfree86/os-support/bus \
                    -I$(top_srcdir)/glx \
-                   -I$(top_srcdir)/GL/include \
-                   -I$(top_builddir)/GL/include \
                    -DHAVE_XORG_CONFIG_H \
                    @DIX_CFLAGS@ @XORG_CFLAGS@ @DRIPROTO_CFLAGS@ \
                    @LIBDRM_CFLAGS@ \

hw/xquartz/GL/Makefile.am

@@ -3,8 +3,6 @@ AM_CFLAGS = $(XSERVER_CFLAGS) $(DIX_CFLAGS)
 AM_CPPFLAGS = \
 	-I$(top_srcdir) \
 	-I$(top_srcdir)/glx \
-	-I$(top_srcdir)/GL/include \
-	-I$(top_srcdir)/GL/mesa/glapi \
 	-I$(top_srcdir)/hw/xquartz \
 	-I$(top_srcdir)/hw/xquartz/xpr \
 	-I$(top_srcdir)/miext/damage