Run .py tests in alphabetic order instead of random order.
Run .py tests in alphabetic order instead of random order.

* build/generator/gen_base.py
  (_collect_paths): Sort files.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion