mavgen_c.py output isn't cross-platform friendly

[Gussy]

The files output by mavgen_c.py have different line endings when generated on linux vs. generated on Windows.

On windows (within a bash shell) the following commands needs to be run on all the output files to convert their line endings sed -i 's/\r//' <file>, otherwise git will think every file has changed after headers are generated, but will not show any differences in git diff.