Add tex-tex-gyre-math 2014

TeX-Gyre-Math is to be a collection of maths fonts to match the
text fonts of the TeX-Gyre collection. The collection will be
made available in OpenType format, only; fonts will conform to
the developing standards for OpenType maths fonts. TeX-Gyre-
Math-Pagella (to match Tex-Gyre-Pagella) and TeX-Gyre-Math-
Termes (to match Tex-Gyre-Termes) fonts are provided.

(markd)