Fix #1011.

Setuptools command `test` is now testing all globaleaks tests.
Remove (some?) unused libraries in setup.py.
Update .gitignore files in source tree.

* Don't mind about .changes, .dsc, .build, and other debhelper shit produced
  when building globaleaks.
* Don't mind about .box files produced for vagrant
* Don't mind either about setuptools, or bower generated directories.