Patch for pymol's `setup.py` script to be more accomodating to home-brew and non-macports users

pymol_setup_fix.diff

--- setup.py  2012-12-12 22:55:39.000000000 +0900
+++ setup_fix.py	2012-12-12 23:04:19.000000000 +0900
@@ -153,10 +153,14 @@
         outputheader.close()
         outputfile.close()
 
-        EXT = "/opt/local"
+        if os.path.isdir("opt/local"):
+            EXT = "/opt/local"
+        else:
+            EXT = "/usr/local"
         inc_dirs=["ov/src",
                   "layer0","layer1","layer2",
                   "layer3","layer4","layer5", 
+                  "/usr/X11/include",
                   EXT+"/include",
                   EXT+"/include/GL",
                   EXT+"/include/freetype2",
@@ -167,7 +171,7 @@
                   ]
         libs=[]
         pyogl_libs = []
-        lib_dirs=[]
+        lib_dirs=["/usr/X11/lib",]
         def_macros=[("_PYMOL_MODULE",None),
                     ("_PYMOL_LIBPNG",None),
                     ("_PYMOL_FREETYPE",None),