Request for Review: Add Mac OS X Instructions to README-builds.html

[Henri Gomez]

> I was able to build on Mountain Lion with XQuartz installed: http://xquartz.macosforge.org/landing/, but I had to do some makefile hacking to get it to work. I don't have a cross-version patch yet, sorry.
>
> I'd personally like an option to build a JDK without the X11 support. I'm trying to imagine a scenario when I would ever want an X11-based AWT, but can't.

Scott, X11 dependencies are only for FreeType.
Embedding FreeType in OpenJDK OSX package could avoid current problem,
ie binaries produced on Lion didn't works on Snow