Added a sanity check on call start.
In case of know sangoma_isupd boost errors

Added Loop command to enable channel looping
on CCR tests in ss7.

Added hwec enable disable commands that are
available in CLI



git-svn-id: http://svn.openzap.org/svn/openzap/trunk@1053 a93c3328-9c30-0410-af19-c9cd2b2d52af