Robustify hoop_stress test closes #3633

Converge tighter, loosen up stress tolerances a bit, use inexact Newton
to speed it up a bit, remove setting of pc_hypre_boomeramg_strong_threshold.
Merge pull request #3716 from bwspenc/fix_tests2

Robustify hoop_stress test
Looks like subprocess.check_output is not available on python 2.6(something). closes #3725
Merge pull request #3726 from milljm/peacock_subprocess

switch from check_output to Popen
Fix bug in MooseEnum::fillNames() where an error occured if only a set of delimiters was passed as an option. This caused an out-of-bounds access. Simplify logic in MooseUtils::tokenize()
refs #3718
Remove commas from all framework MooseEnum
Remove commas from all modules MooseEnum
Allow mooseDeprecated() to take an argument for consistency
Support backwards compatible MooseEnums (with commas)