Convert all instances of XTHREADS to USE_XTHREADS. This fixes one of

serveral things that are broken when building on a system with X.org 7.0rc0
installed.

src/glx/x11/glxclient.h

@@ -60,7 +60,7 @@
 #include "GL/internal/glcore.h"
 #include "glapitable.h"
 #include "glxextensions.h"
-#if defined( XTHREADS )
+#if defined( USE_XTHREADS )
 # include <X11/Xthreads.h>
 #elif defined( PTHREADS )
 # include <pthread.h>
@@ -547,7 +547,7 @@ extern __GLXdisplayPrivate *__glXInitialize(Display*);
 extern int __glXDebug;
 
 /* This is per-thread storage in an MT environment */
-#if defined( XTHREADS ) || defined( PTHREADS )
+#if defined( USE_XTHREADS ) || defined( PTHREADS )
 
 extern void __glXSetCurrentContext(__GLXcontext *c);
 
@@ -570,14 +570,14 @@ extern __GLXcontext *__glXcurrentContext;
 #define __glXGetCurrentContext()	__glXcurrentContext
 #define __glXSetCurrentContext(gc)	__glXcurrentContext = gc
 
-#endif /* defined( XTHREADS ) || defined( PTHREADS ) */
+#endif /* defined( USE_XTHREADS ) || defined( PTHREADS ) */
 
 
 /*
 ** Global lock for all threads in this address space using the GLX
 ** extension
 */
-#if defined( XTHREADS )
+#if defined( USE_XTHREADS )
 extern xmutex_rec __glXmutex;
 #define __glXLock()    xmutex_lock(&__glXmutex)
 #define __glXUnlock()  xmutex_unlock(&__glXmutex)

src/glx/x11/glxext.c

@@ -145,7 +145,7 @@ static __GLapi *IndirectAPI = NULL;
  * Current context management and locking
  */
 
-#if defined( XTHREADS )
+#if defined( USE_XTHREADS )
 
 /* thread safe */
 static GLboolean TSDinitialized = GL_FALSE;
@@ -1106,7 +1106,7 @@ __GLXdisplayPrivate *__glXInitialize(Display* dpy)
     XEDataObject dataObj;
     int major, minor;
 
-#if defined(XTHREADS)
+#if defined(USE_XTHREADS)
     {
         static int firstCall = 1;
         if (firstCall) {

src/mesa/glapi/gl_x86-64_asm.py

@@ -127,7 +127,7 @@ class PrintGenericStubs(gl_XML.gl_print_base):
 		print '#  define HIDDEN(x)'
 		print '#endif'
 		print ''
-		print '#if defined(PTHREADS) || defined(XTHREADS) || defined(SOLARIS_THREADS) || defined(WIN32_THREADS) || defined(BEOS_THREADS)'
+		print '#if defined(PTHREADS) || defined(USE_XTHREADS) || defined(SOLARIS_THREADS) || defined(WIN32_THREADS) || defined(BEOS_THREADS)'
 		print '#  define THREADS'
 		print '#endif'
 		print ''

src/mesa/glapi/gl_x86_asm.py

@@ -86,7 +86,7 @@ class PrintGenericStubs(gl_XML.gl_print_base):
 		print '#define GLOBL_FN(x) GLOBL x'
 		print '#endif'
 		print ''
-		print '#if defined(PTHREADS) || defined(XTHREADS) || defined(SOLARIS_THREADS) || defined(WIN32_THREADS) || defined(BEOS_THREADS)'
+		print '#if defined(PTHREADS) || defined(USE_XTHREADS) || defined(SOLARIS_THREADS) || defined(WIN32_THREADS) || defined(BEOS_THREADS)'
 		print '#  define THREADS'
 		print '#endif'
 		print ''

src/mesa/glapi/glthread.c

@@ -242,7 +242,7 @@ _glthread_SetTSD(_glthread_TSD *tsd, void *ptr)
  * XFree86 has its own thread wrapper, Xthreads.h
  * We wrap it again for GL.
  */
-#ifdef XTHREADS
+#ifdef USE_XTHREADS
 
 unsigned long
 _glthread_GetID(void)

src/mesa/glapi/glthread.h

@@ -65,7 +65,7 @@
 
 
 #if (defined(PTHREADS) || defined(SOLARIS_THREADS) ||\
-     defined(WIN32_THREADS) || defined(XTHREADS) || defined(BEOS_THREADS)) \
+     defined(WIN32_THREADS) || defined(USE_XTHREADS) || defined(BEOS_THREADS)) \
     && !defined(THREADS)
 # define THREADS
 #endif
@@ -193,7 +193,7 @@ typedef CRITICAL_SECTION _glthread_Mutex;
  * XFree86 has its own thread wrapper, Xthreads.h
  * We wrap it again for GL.
  */
-#ifdef XTHREADS
+#ifdef USE_XTHREADS
 #include <X11/Xthreads.h>
 
 typedef struct {
@@ -225,7 +225,7 @@ typedef xmutex_rec _glthread_Mutex;
 #define _glthread_UNLOCK_MUTEX(name) \
    (void) xmutex_unlock(&(name))
 
-#endif /* XTHREADS */
+#endif /* USE_XTHREADS */
 
 
 

src/mesa/x86-64/glapi_x86-64.S

@@ -35,7 +35,7 @@
 #  define HIDDEN(x)
 #endif
 
-#if defined(PTHREADS) || defined(XTHREADS) || defined(SOLARIS_THREADS) || defined(WIN32_THREADS) || defined(BEOS_THREADS)
+#if defined(PTHREADS) || defined(USE_XTHREADS) || defined(SOLARIS_THREADS) || defined(WIN32_THREADS) || defined(BEOS_THREADS)
 #  define THREADS
 #endif
 

src/mesa/x86/glapi_x86.S

@@ -63,7 +63,7 @@
 #define GLOBL_FN(x) GLOBL x
 #endif
 
-#if defined(PTHREADS) || defined(XTHREADS) || defined(SOLARIS_THREADS) || defined(WIN32_THREADS) || defined(BEOS_THREADS)
+#if defined(PTHREADS) || defined(USE_XTHREADS) || defined(SOLARIS_THREADS) || defined(WIN32_THREADS) || defined(BEOS_THREADS)
 #  define THREADS
 #endif