Fix ast_channel_name (Reported by Andrew Thomas)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4978 43c1dc8c-776e-4df2-8ef1-6e829299be21
Added experimental gpickup version for review

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4979 43c1dc8c-776e-4df2-8ef1-6e829299be21
Fix DEBUGCAT compile error

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4980 43c1dc8c-776e-4df2-8ef1-6e829299be21