Patch #557719 by Tony Lownds, slightly massaged by me: streamline the
OSX framework build process. Things fixed/modified:
- the filesystem case-sensitivity test now works for builds outside
  the source directory
- various other fixes for building outside the source directory
- python.app now has a target in the main Makefile
- WASTE and AquaTk are found more automatically
diff --git a/Mac/OSX/Mac.pth b/Mac/OSX/Mac.pth
new file mode 100644
index 0000000..6ab4acd
--- /dev/null
+++ b/Mac/OSX/Mac.pth
@@ -0,0 +1,2 @@
+../../../Mac/Lib
+../../../Mac/Lib/lib-scriptpackages