This fixes a problem with pattern ranges; and corrects a situation in res_features, where an extension would be created with the name Zap/51, as an example. THe / is bad because it would tend to mean that the 51 is to be cid matched.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@89329 65c4cc65-6c06-0410-ace0-fbb531ad65f3