Bug 638219 - Remove +x bit from tests/lib/jittests.py. r=terrence
Bug 638219 - Clean up imports and unused variables. r=terrence
Bug 638219 - Get rid of wildcard imports. r=terrence
Bug 638219 - Style: treat print as a function, improve formatting. r=terrence
Bug 638219 - Pass jit-test script options around as an argument. r=terrence
Bug 638219 - Pass path to JS shell around as an option value. r=terrence
Bug 638219 - Move jittests.main() function back into jit_test.py script. r=terrence