Update for M+ Bitmap Fonts 1.2.0a.
This version includes latin fonts and install script that 1.0.4 don't includes.
This port build for nothing in 'do-build' target, and it run install script that
includes fonts build in 'do-install' target.
PR: ports/50344
Submitted by: "H.Miyamoto" <Ys@PixyGarden.net>