Make sure we support nested functions with GCC 4.01 OS/X. This might not be OS/X only,

but I'll leave it to kpfleming to add this to the configure script for testing.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@150469 65c4cc65-6c06-0410-ace0-fbb531ad65f3