Embraced clock_gettime and mach_absolute_time in _unix Also made _unix wall clock time reports more precise; this was necessitated by the main changes.

\.(pyc|pyo|class|orig)$
^upreckon/(upreckon|_unix\.so)$
(/|^)suite$
^(build|dist|upreckon\.egg-info)$
^zipfiles/zipfile\d+-original.py$