Added template for MetaBench. Fixed templates for mdtest and fs_test.
Commented parameters for these benchmarks and added optional looping
command creation structure.
Merge pull request #1 from atorrez/master

Modified env_to_db.tcsh to use plfs_version command
Added new parameters for reading, 'e' and 'E'.
Updated to most common execution model and parameters.
Added support for srun, in addition to aprun and mpirun.
Return for get_opt_long_only has to be an int, not a char. Added
_DEBUG_FSTEST.
Added "/" at the end of the "-d" option so that directories are created
correctly.
Commented sections for possibly adding N-N with more than one file per
pe. Also, documented all barriers in fs_test_template.py.
Fixed logic with flatten flag and flatten_file use with PLFS N-1 I/O.
Fixed reference to mdtest_wrapper.py in the template.