Minor change to enable the policy engine by default.
Made the screen output default "on"
Only do screen output on node 0
Removed meaningless debugging messages.
Add function get_available_profiles to retrieve names of profiles that
can be retrieved with get_profile(string)
Added thread-specific measurement for outputting TAU profiles.
Minor change to fix the exclusive value of "main".
Minor fix for main exclusive again.
Counter class.
Merge branch 'master' of https://code.google.com/p/xpress-apex

Conflicts:
	apex/profiler_listener.hpp
I think the simple counter API will actually work, so we don't need the
counter class.
Publish APEX counters as HPX3 performance counters.