Patch by Michael Henry.

This was the original intention, but it wasn't threaded all the way through due
to 'endtime'.  Also added a trivial assertion to get coverage of __str__.

Patch by Yves Dorfsman.

Close Issue 11570: Lib/test/test_distutils.py tries to mix 32 and 64 bits object files, doesn't obey LDFLAGS

ensure that it will be found regardless of the shell PATH. This ensures
that multiprocessing.cpu_count works on default installs of MacOSX.