Export symbols needed by the RandR implementation in fglrx

GIT change
http://cgit.freedesktop.org/xorg/xserver/commit/?id=45c8bd0fe54273039fdaa1eeeafb81b5774f2c75
changed the default symbol visibility of the Xserver. As a result 2 symbols
that are needed by the RandR 1.2/1.3 implementation in the fglrx driver are no
longer visible:

xf86configptr
xf86CursorScreenKey

We would like to get these two symbols _X_EXPORT'ed before Xserver 1.7 is
released. Otherwise it will be problematic for fglrx to support RandR 1.3 on
Xserver 1.7.

In the future, we may want to sync our RandR implementation to later versions
of the RandR implementation in hw/xfree86/modes. Therefore it would be nice if
all symbols used by the Xserver RandR implementation were _X_EXPORT'ed in the
future.

hw/xfree86/common/xf86Config.h

@@ -41,7 +41,7 @@
 /*
  * global structure that holds the result of parsing the config file
  */
-extern XF86ConfigPtr xf86configptr;
+extern _X_EXPORT XF86ConfigPtr xf86configptr;
 #endif
 
 typedef enum _ConfigStatus {

hw/xfree86/common/xf86Globals.c

@@ -43,6 +43,7 @@
 #include "xf86Parser.h"
 #include "xf86Xinput.h"
 #include "xf86InPriv.h"
+#include "xf86Config.h"
 
 /* Globals that video drivers may access */
 

hw/xfree86/ramdac/xf86CursorPriv.h

@@ -45,6 +45,6 @@ Bool xf86InitHardwareCursor(ScreenPtr pScreen, xf86CursorInfoPtr infoPtr);
 
 CARD32 xf86ReverseBitOrder(CARD32 data);
 
-extern DevPrivateKey xf86CursorScreenKey;
+extern _X_EXPORT DevPrivateKey xf86CursorScreenKey;
 
 #endif /* _XF86CURSORPRIV_H */