We gzip them separately in the Makefile and the gzipped result will be
stored without (further) compression in the .apk.

Use this to store the ttf font files. Shaves off a bit .apk size.

This might seem a bit odd way to do it, why not store these files in
the normal Zip compressed fashion in the .apk? It seems hard to tell
Ant (based on path, not extension) what files to compress and what
not, so we have to keep telling it to not (further) compress any files
at all.

Change-Id: I0d40d8811e6c9df6b28c285845b1db225507f5d4