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/special_variable_macros.i

@@ -3,6 +3,8 @@
 // test $typemap() special variable function
 // these tests are not typical of how $typemap() should be used, but it checks that it is mostly working
 
+%warnfilter(SWIGWARN_GO_NAME_CONFLICT);                       /* Ignoring 'NewName' due to Go name ('NewName') conflict with 'Name' */
+
 %inline %{
 struct Name {
   Name(const char *n="none") : name(n) {}