Added '?' to the list of encoded operators. Method names that contained '?' failed verification.

git-svn-id: http://lampsvn.epfl.ch/svn-repos/scala/scala/trunk@5664 5e8d7ff9-d8ef-0310-90f0-a4852d11357a

src/compiler/scala/tools/nsc/util/NameTransformer.scala

@@ -36,6 +36,7 @@ object NameTransformer {
   enterOp('-', "$minus");
   enterOp(':', "$colon");
   enterOp('\\', "$bslash");
+  enterOp('?', "$qmark");
 
   /** Replace operator symbols by corresponding "$op_name" */
   def encode(name: String): String = {