Added support for Maya version 2011

pandatool/src/mayaprogs/mayaWrapper.cxx

@@ -57,6 +57,7 @@ struct { char *ver, *key; } maya_versions[] = {
   { "MAYA2008", "2008" },
   { "MAYA2009", "2009" },
   { "MAYA2010", "2010" },
+  { "MAYA2011", "2011"},
   { 0, 0 },
 };