Update Malayalam fonts

* Use the latest versions from upstream: 6.1.1
* Meera and AnjaliOldLipi upstream URL is now http://smc.org.in
* Fonts downloaded from upstream release location
  download.savannah.gnu.org/releases/smc/fonts/malayalam-fonts-6.1
* Include WOFF2 version of fonts too
* WOFF2 generated using woff2_compress tool of
  https://code.google.com/p/font-compression-reference

Change-Id: I55572c462a42efe0ceabd6b5a7bc00310ea58fd3