Enhancement: use sccp_malloc/sccp_calloc everywhere so that all allocation show up in 'memory show summary'. Fix: Memory Leak in sccp_softkey

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5785 43c1dc8c-776e-4df2-8ef1-6e829299be21
Enhancement: replace free/ast_free with sccp_free and realloc with sccp_realloc (consistency)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5786 43c1dc8c-776e-4df2-8ef1-6e829299be21