Reverting regex part of -r403545 at request of file.

res_sorcery_astdb.c: Fix get multiple records by regex.

* Fix sorcery_astdb_retrieve_regex() pattern matching.  Let the regexec()
function match the stored key values instead of having astdb prefilter
them.  Previoiusly you could only use a simple regex pattern when the
pattern began with '^'.
........

Merged revisions 403559 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@403560 f38db490-d61c-443f-a65b-d21fe96a405b