TST: pass sys.argv to run_module_suite by default

allows passing flags like --pdb to test files
also add call to files where its missing
Merge pull request #5042 from juliantaylor/test-argv

TST: pass sys.argv to run_module_suite by default
BUG: fix array_almost_equal for array subclasses

introduced in gh-4105/ab04e1ae0e8eca717bc7e42f3b0a60c9ff764289
Merge pull request #5048 from juliantaylor/subclass-test-fix

BUG: fix array_almost_equal for array subclasses