Create wp_options module

wp_options.w and tegen.w:

- Remove all argument parsing and pretty-print code from tegen.w
- Create wp_options module; clean it up a bit
- Add wp_options build to Makefile.am and .gitignore

Additional wp_options module changes:

- Complete removal of argument parsing from tegen.w
- Major code reorganization
- Minor bug fixes based on code-reorganization

wp_tests.w: Correct bad TeX format of wp_test_execute_tests:

- while() loop apparently throwing off TeX formatting of the
  wp_test_execute_tests function. Moved parts of the logic into a
  separate section which fixed the issue.

Finally, add assembly language files

- It has been a while.