Everything fixed to make pyflake8 happy.
Merged mazkolain/master into pyflakes-cleanup
Omit certain module subfolder for builds.
Commit submodule state.
Fix newlines and more pyflakes cleanup
Fix bug I introduced
Fixed all .format() strings to be compatible with Python 2.6
Fix some specific issues on .format().

Tuples passed to .format() needed an asteriks (*) to unpack, and removed
some integer formatting on strings.
build.py: Fix integer format specs with strings.
Merge branch 'pyflakes-cleanup'