Create a special CONSTRAINED font bucket in frameworks.

This is a temporary font profile to get razor and razorg (Nexus 7,
2013 version). It's not tested thoroughly, and should not be used for
any other devices.

The CONSTRAINED profile removes Bamum, Lisu, Mandaic, Mongolian, New
Tai Lue, Syriac, Tibetan, and Vai fonts from razor[g] devices, and
switches the CJK fonts to the limited pre-Lollipop fonts.

Bug: 22929087
Change-Id: I58c1693ee45e54b429013029d236617834446811