(submit/miext-extinit) xfree86: dri2: unexport noXFree86DRI2Extension and move into extension

This isn't needed by any external module, so no need to export it.
And those flags are better off in the corresponding extension,
instead of the OS layer.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>

hw/xfree86/common/xf86Extensions.h

@@ -35,8 +35,8 @@ void XFree86DRIExtensionInit(void);
 
 #ifdef DRI2
 #include <X11/extensions/dri2proto.h>
-extern _X_EXPORT Bool noDRI2Extension;
-extern void DRI2ExtensionInit(void);
+extern Bool noDRI2Extension;
+void DRI2ExtensionInit(void);
 #endif
 
 #ifdef XF86VIDMODE

hw/xfree86/dri2/dri2ext.c

@@ -56,7 +56,6 @@
 
 static int DRI2EventBase;
 
-
 static Bool
 validDrawable(ClientPtr client, XID drawable, Mask access_mode,
               DrawablePtr *pDrawable, int *status)