Config for git-blame flags -w, -M, and -C?

git-blame has a few options are useful when working with commits that
only modify whitespace (-w), move code within the file (-M), or move
code between files (-C). It would be nice if there was a way to
configure git so these options could be enabled by default when
running `git blame`.

I suppose this would also require the addition of the inverse options,
or perhaps arguments for the options, to disable them if needed.

Thoughts?

/Joe