Updating Makefile to Allow Profiling of GCC Internals

[Nicholas Krause]

Greetings,

I'm not as familar of the currrent Makefile internals for GCC, so what 
is the best

way to add -pg for profiling. Seems I need to add it for gprof in order 
to get

some real data for multi-threading GCC internals.

Thanks,

NIck