Fix sqlite config driver segfault and broken queries

Fix sqlite config driver segfault and broken queries

The sqlite realtime handler assumed you had a static config configured
as well. The realtime multientry handler assumed that you weren't using
dynamic realtime.

(closes issue ASTERISK-18354)
(closes issue ASTERISK-18355)

Review: https://reviewboard.asterisk.org/r/1561
........

Merged revisions 343375 from http://svn.asterisk.org/svn/asterisk/branches/1.8

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/10@343393 65c4cc65-6c06-0410-ace0-fbb531ad65f3