[Bug-apl] OpenMP patch, test harness and benchmark

[David B. Lamkins]

See attached files.

Configured using ASSERT_LEVEL_WANTED=0, the execution ratio improved
slightly to about 2:1.

Note that this test uses a wider range of ravel lengths. The execution
time ratio is pretty much constant, falling off only for the smallest
(100 element) ravels.

I did monitor the system this time. All 8 cores were busy at near to
100% utilization. Memory utilization remained below the swap threshold
during the entire test.

gnu-apl-openmp-diff-20140315.txt
Description: Text document

ParallelPerf.apl
Description: Text document

gnu-apl-openmp-benchmark.txt
Description: Text document