Remove the -rename option in the Go language support. Do a much

better job of checking for name conflicts.  Ignore conflicting names
with a warning.  Adjust the testsuite accordingly.


git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@12135 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/test-suite/director_finalizer.i

@@ -1,4 +1,7 @@
 %module(directors="1") director_finalizer
+
+%warnfilter(SWIGWARN_GO_NAME_CONFLICT);                       /* Ignoring 'deleteFoo' due to Go name ('DeleteFoo') conflict with '~Foo' */
+
 %{
 
 int status = 0;