Fix uncompileable code when %rename results in two enum items with the same name

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@12098 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/test-suite/common.mk

@@ -180,6 +180,7 @@ CPP_TEST_CASES += \
 	disown \
 	dynamic_cast \
 	empty \
+	enum_rename \
 	enum_scope_template \
 	enum_template \
 	enum_thorough \

Examples/test-suite/enum_rename.i

@@ -0,0 +1,12 @@
+%module enum_rename
+
+%warnfilter(SWIGWARN_PARSE_REDEFINED) S_May;
+
+// %rename with rxspencer can do the equivalent of these two renames, which was resulting in uncompileable code
+%rename(May) M_May;
+%rename(May) S_May;
+
+%inline %{
+	enum Month { M_Jan, M_May, M_Dec };
+	enum Severity { S_May, S_Can, S_Must };
+%}