Removed configure option --enable-refcount-liveobjects (not in use any more). Added new configure option: --enable-refcount-debug to activate /tmp/sccp_ref /tmp/refs logging for refcount debug purposes, disabled by default (Issue reported by Bob)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4147 43c1dc8c-776e-4df2-8ef1-6e829299be21