add channel iterator

	Minor fixes to glare testing, add check for INBAND TONES available in ALERT msgs
	Fix for handling T310 expiring
	Minor fixes to glare testing
	Fixed handling for Progress with cause
	Support for facility timeout

with some machines, which seem to send them when no operator is around.

Fix for T.38 gateway not kicking off or ending transmission under certain
timing conditions.

mod_callcenter: Alot of cleanup.  Added max-wait-time and max-wait-time-with-no-agent param to a queue.

max-wait-time : allow to make the caller quit the queue after X number of waited second.  The second one allow
max-wait-time-with-no-agent : This will wait for a range of second with no agent before kicking the member out of the queue.  This allow safe shift change with all agents login out and back in

I've changed the Event value from CC-Name to either CC-Agent or CC-Queue.  So watchout for your current event socket apps.  Sorry about this change.

Lot to be tested in this commit.  Please use Jira to post problems, and new feature request can be added at the bottom of the wiki page.