Expland the black list to include emacs backup and lock files

I tried to tighten the whitelist, but that didn't work.

distutils must die.

MANIFEST.in

@@ -13,6 +13,8 @@ global-exclude *.dll
 global-exclude *.pyc
 global-exclude *.pyo
 global-exclude *.so
+global-exclude *~
+global-exclude *\#
 global-exclude coverage.xml
 
 prune docs/_build