MMQA test harness improvements:
* Don't compile for profiling (not needed at the moment)
* Compile with -Wno-unused -Wno-missing-prototypes on OS X (so that argerr/146.c and similar test cases will build).
* Output conclusion for the first failing result (in alphabetical order), rather than whatever comes out of the hash table first.
* Don't gather symbols from block comments, otherwise we can't specify results like "assertcond = mps_pool_o != NULL" as MMQA will think that mps_pool_o is a missing symbol.
Get the MMQA argerr tests working:
* Make sure all the test build and run.
* Add output specifications to the passing tests.
* New testset/argerr runs them all.