Provide support for re-enabling Xinerama on session resumptions.

nx-X11/programs/Xserver/hw/nxagent/Args.c

@@ -42,6 +42,7 @@ is" without express or implied warranty.
 #include "screenint.h"
 #include "input.h"
 #include "misc.h"
+#include "globals.h"
 #include "scrnintstr.h"
 #include "dixstruct.h"
 #include "servermd.h"
@@ -1202,6 +1203,36 @@ static void nxagentParseOptions(char *name, char *value)
 
     return;
   }
+  else if (!strcmp(name, "xinerama"))
+  {
+#ifdef PANORAMIX
+    if (!PanoramiXExtensionDisabledHack)
+    {
+      if (!strcmp(value, "1"))
+      {
+        nxagentChangeOption(Xinerama, 1);
+      }
+      else if (!strcmp(value, "0"))
+      {
+        nxagentChangeOption(Xinerama, 0);
+      }
+      else
+      {
+        fprintf(stderr, "Warning: Ignoring bad value '%s' for option 'xinerama'.\n",
+                    validateString(value));
+      }
+    }
+    else
+    {
+      nxagentChangeOption(Xinerama, 0);
+      fprintf(stderr, "Warning: Xinerama extension has been disabled via -disablexineramaextension cmdline switch.\n");
+    }
+#else
+    nxagentChangeOption(Xinerama, 0);
+    fprintf(stderr, "Warning: No Xinerama support compiled into nxagent.\n")
+#endif /* of PANORAMIX */
+    return;
+  }
   else if (!strcmp(name, "resize"))
   {
     if (nxagentOption(DesktopResize) == 0 || strcmp(value, "0") == 0)

nx-X11/programs/Xserver/hw/nxagent/Reconnect.c

@@ -624,7 +624,7 @@ Bool nxagentReconnectSession(void)
 
   nxagentRedirectDefaultWindows();
 
-  if (nxagentResizeDesktopAtStartup || nxagentOption(Rootless) == True)
+  if (nxagentResizeDesktopAtStartup || nxagentOption(Rootless) == True || nxagentOption(Xinerama) == True)
   {
     nxagentChangeScreenConfig(0, nxagentOption(RootWidth),
                                   nxagentOption(RootHeight), 0, 0);

nx-X11/programs/Xserver/hw/nxagent/Screen.c

@@ -1113,8 +1113,10 @@ Bool nxagentOpenScreen(int index, ScreenPtr pScreen,
   nxagentChangeOption(ViewportXSpan, nxagentOption(Width) - nxagentOption(RootWidth));
   nxagentChangeOption(ViewportYSpan, nxagentOption(Height) - nxagentOption(RootHeight));
 
-  /* store the user's preference provided via cmdline */
-  nxagentOption(Xinerama) = !noPanoramiXExtension;
+  /* PanoramiXExtension enabled via cmdline, turn on Xinerama in nxagent
+   */
+  if( (!noPanoramiXExtension) && (!PanoramiXExtensionDisabledHack) )
+    nxagentOption(Xinerama) = True;
 
   if (nxagentReconnectTrap == 0)
   {

nxcomp/Misc.cpp

@@ -306,6 +306,7 @@ clipboard=n\n\
 streaming=n\n\
 backingstore=n\n\
 composite=n\n\
+xinerama=n\n\
 shmem=b\n\
 shpix=b\n\
 kbtype=s\n\