Enabling Memory Profiling for xDebug 2

XDebug has not had memory profiling for the last couple of years. I am not sure why it was taken out, but it was. The APD memory profiling seems for the last year or so to be completely broken, so that is no good as well. There is a patch over at http://xdebug.org/archives/xdebug-general/1228.html which will allow for memory profiling in xdebug.