Merge changes from team/russell/dundi_results

This introduces two new dialplan functions: DUNDIQUERY and DUNDIRESULT.
DUNDIQUERY lets you intitiate a DUNDi query from the dialplan.  Then,
DUNDIRESULT will let you find out how many results there are, and access each
one without having to the query again.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@62267 65c4cc65-6c06-0410-ace0-fbb531ad65f3