nox_main.cc: correcting trailing spaces, expanding tabs.
gitignore: adding config and m4 generated scripts.

Ignore top level config directory and m4 build time generated scripts.
findtrailingcommas.py: adding .cc and .hh to track.

That's nice script to track cpp sources as well.
treewide: fixing trailing commas.

Trailing commas found by findtrailingcommas.py.
treewide: s///g
Merge pull request #11 from vitalivanov/dev

Fix a few formatting issues.