debugging omp
Fixed OpenMP directives
update to omp-debug of step3ds
Tweak to scheduling for step3ds; starting to parallelize step3
Commenting step3ds; first pass at safe step3
Semi-satisfactory parallelization of unsplit 3D
Tidying, removing unnecessary thread fork/joins
Switching scheduling type for small performance boost
Changing to block-oriented parallelization breakdown
Reordered step3 loops for better cache locality
Fixing unintended change to makefile
Merge pull request #51 from gradylemoine/omp-3d

OpenMP parallelization of 3D Classic -- works for me and gives good speedup, nice work!
Cleaned up examples: added comments to setrun.py and brought makefiles into standard form, added README files...
also added examples/acoustics_2d_radial/1drad from amrclaw
Merge pull request #52 from rjleveque/cleanup

Cleaned up examples:
Replaced tests/ directory with regression tests that run codes and check sum of output values
Improved regression tests to make it easier to adapt to new problems
Merge pull request #53 from rjleveque/regression

Regression tests
acoustics_1d_example1 : Fixed line style
acoustics_1d_heterogenous: added Matlab files
acoustics_2d_radial : added Matlab files and tested example