git-am: --whitespace=x option.
git-am: --whitespace=x option.

This is passed down to git-apply to override the built-in
default and per-repository configuration at runtime.

Signed-off-by: Junio C Hamano <dc50d1021234060e53ec42a77d526afa2fe07479@cox.net>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git