Use MAX_LOGICAL with some performance tests

When investigating performance numbers after the most recent release, we
discovered that the NAS Parallel Benchmarks implementations for IS and EP
benefited from setting CHPL_RT_NUM_THREADS_PER_LOCALE to MAX_LOGICAL, and the
implementation for FT also benefited but only with larger problem sizes (size B
and up).  The consensus at our most recent meeting was that we should gather
numbers with these settings where beneficial going forward, so I added this
value to the performance execution options for these tests.
Add new lines at end of files
Merge pull request #854 from lydia-duncan/performanceChanges

Use MAX_LOGICAL with some performance tests [trivial]

When investigating performance numbers after the most recent release, we
discovered that the NAS Parallel Benchmarks implementations for IS and EP
benefited from setting CHPL_RT_NUM_THREADS_PER_LOCALE to MAX_LOGICAL, and the
implementation for FT also benefited but only with larger problem sizes (size B
and up). The consensus at our most recent meeting was that we should gather
numbers with these settings where beneficial going forward, so I added this
value to the performance execution options for these tests.
Skip pgi due to flag incompatibility; Remove -std=c99 as it's thrown by default
Merge pull request #855 from benharsh/csu-fix-compile

Fix CSU OMP compilation issues with pgi/intel

We throw a c99 compatible flag by default which caused a warning message from the intel compiler. This PR removes that flag from the OpenMP tests from CSU.

The PGI compiler doesn't support the -fopenmp flag, and there's not a clean way to choose different flags based on the compiler (at least not yet). For now, disable testing with PGI for these CSU OpenMP tests.

These changes won't effect the online performance results.