--disable-macosx-runtime-support is broken (and should be deprecated)

The --disable-macosx-runtime-support configure option is supposed to stop AWT from using the framework and use X11 instead. This does not work. Also, even if the option is not present, we behave as if it was present! Only reason not everything breaks down is that we have errors upon errors.

The most noticable side effect is that we will fail to build on macosx if freetype is not present, even if it is not user nor needed.

Fortunately, we don't have to fix this, since we can just deprecate the flag. X11 support for macosx is going away (see JDK-8025673) and thus this option become meaningless.