Revert "panoramix: don't install panoramiX.h and panoramiXsrv.h"

The NVIDIA driver still supports GLX across physical screens in Xinerama
configurations, and uses the definitions in these headers to do that.

This reverts commit 3f469acb96.

Signed-off-by: Aaron Plattner <aplattner@nvidia.com>

Xext/meson.build

@@ -44,6 +44,7 @@ endif
 
 if build_xinerama
     srcs_xext += ['panoramiX.c', 'panoramiXprocs.c', 'panoramiXSwap.c']
+    hdrs_xext += ['panoramiX.h', 'panoramiXsrv.h']
 endif
 
 if build_xsecurity

hw/xfree86/sdksyms.sh

@@ -58,6 +58,10 @@ cat > sdksyms.c << EOF
 #include "shmint.h"
 #endif
 #include "syncsdk.h"
+#ifdef XINERAMA
+# include "panoramiXsrv.h"
+# include "panoramiX.h"
+#endif
 
 /* glx/Makefile.am */
 #ifdef GLX