Glass currently uses "mat" in its native library names, which stands for Modern (Multithreaded) Application Toolkit, which was originally supposed to also include a threading toolkit used by Glass, which has been long removed now. So now MAT is just Glass.

It's not a big issue, but before we publicly open up Glass, and since we're touching Glass build, maybe we should change the library names from "mat" to "glass". As it is, any developer looking at the native libraries might be confused as to what part of JFX the "mat" libraries belong to.