Callweaver 1.2 RC4

Callweaver project is a community driven software PBX project. The most important differences between Callweaver and Asterisk are built-in STUN support, the use of SpanDSP for better codecs and full T.38 fax over IP support, Sqlite instead of Berkeley DB, universal jitterbuffer, POSIX timers to avoid Zaptel timing dependencies, greater speed, more efficient dialplan execution, and greater stability.
Enhancements:
- This is hopefully the last release candidate before the 1.2 release.
- There are many bugfixes and improvements.