Merge branch 'python-work' into maint * python-work: cosmetics: fix various typos and grammaros py-compile: '--' and non-option arguments terminate the option list py-compile: complain on unrecognized options py-compile: normalize error and help messages python tests: add "unit tests" on py-compile py-compile: the '--destdir' option now accepts a blank argument python: run the 'py-compile' script with $(SHELL)