Thanks to @Blues-Today for reporting that --postarg was not working.
This needed a regression test, and the best way to distinguish --prearg from --postarg is to display the full preprocessor command line, therefore a new option was added for that purpose: --preproc-show-cmdline
Fixes#18.
This test suite has been in use for a long time now, in place of the obsolete and unmanageable testparser.py and testfuncs.py. It verifies the complete optimizer output to stdout and stderr, to ensure that the output matches the expectations.
See unit_tests/README.txt for more info.
