Split Xregion headers according to upstream
We've stolen the Xregion code from libX11, so let's keep the same
header naming so that it is easier to keep things in sync.
diff --git a/common/Xregion/Region.c b/common/Xregion/Region.c
index 604ecde..e51bcb3 100644
--- a/common/Xregion/Region.c
+++ b/common/Xregion/Region.c
@@ -72,8 +72,11 @@
* the y-x-banding that's so nice to have...
*/
+#include <string.h>
+
+#include "Xlibint.h"
+#include "Xutil.h"
#include "Xregion.h"
-#include "region.h"
#ifndef min
#define min(a,b) (((a) < (b)) ? (a) : (b))