during 'make install', remove any headers from the destination...

during 'make install', remove any headers from the destination include/asterisk directory that are no longer present in the source directory (bug #4035)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@5517 65c4cc65-6c06-0410-ace0-fbb531ad65f3