Jack said we don't need the Mac/Python/ directory any more.
diff --git a/configure.in b/configure.in
index 75a33a1..811b6b2 100644
--- a/configure.in
+++ b/configure.in
@@ -3146,7 +3146,7 @@
 done
 
 AC_SUBST(SRCDIRS)
-SRCDIRS="Parser Grammar Objects Python Modules Mac Mac/Python"
+SRCDIRS="Parser Grammar Objects Python Modules Mac"
 AC_MSG_CHECKING(for build directories)
 for dir in $SRCDIRS; do
     if test ! -d $dir; then