Update for license file
[Module Tag script: dahdiconfig 2.11.41]
Fix Issue 7371, add echocanceller line in system.conf generation and 7360
address comments from code review
FREEPBX-7437 fix sangoma module bug
Merge branch 'release/2.11' into develop

Conflicts:
	module.xml
fix channel math and add ability to set group as "s" to skip channels
Merge branch 'develop' of ssh://git.freepbx.org/freepbx/dahdiconfig into develop
FREEPBX-7484 update faxdetect options. Remove yes, Add both
Dont run genconf over and over and etc
Merge branch 'develop' into release/2.11

Conflicts:
	includes/dahdi_cards.class.php
FREEPBX-7051 FREEPBX-7381 plus bug fixes