Replace SourceFileLoader to make ok.py compatible with python3.2
Change .copy() to [:] in core.py (python3.2 doesn't have list.copy()
testing for python3.2
Modify frame_work tests to avoid calling load_tests multiple times
Merge branch 'import' of github.com:Cal-CS-61A-Staff/ok into import
removed 3.2
Merge branch 'import' of github.com:Cal-CS-61A-Staff/ok into import
Merge pull request #126 from Cal-CS-61A-Staff/import

Replace SourceFileLoader to make ok.py compatible with python3.2