closes issue #11356; Many thanks to snuffy for his code review and changes to...

closes issue #11356; Many thanks to snuffy for his code review and changes to cut down duplication. I tested this against hashtest, and it passes. I reviewed the changes, and they look reasonable. I had to remove a few const decls to make things compile on my workstation,

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@89591 65c4cc65-6c06-0410-ace0-fbb531ad65f3