This is a very trivial hack to define a global mc procedure that
does not actually perform i18n translations on its input strings.
By declaring an mc procedure here in our maint version of git-gui
we can take patches that are intended for the latest development
version of git-gui and easily backport them without needing to
tweak the mc calls first.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>