Clean up imports in hostingsvcs and scmtools tests
Review Request #4294 — Created July 5, 2013 and submitted
Clean up imports in hostingsvcs and scmtools tests This cleans up the now-obsolete md5-vs-hashlib fallbacks, as well as imports much more specific items (in most of scmtools/tests.py's imports, we only cared about a single symbol).
Ran unit tests.