Detect difference between asterisk-11-branch / asterisk-trunk by checking for uuid.h. Added dedicated ast111.c/ast111.h version for asterisk-11-branch because of functional divergence since the introduction of the new asterisk bridging code, requiring a seperate astTrunk.c version

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4661 43c1dc8c-776e-4df2-8ef1-6e829299be21