Release notes for MHEG-5 19.9.0

Fixed:


  * mantis-782 - Crash in text rendering function on 720p, for DTG main test suite
  * mantis-784 - Source needs updating to work with OpenSSL version 1.1.0
  * mantis-916 - Add support for CI+ 1.4
  * mantis-927 - Pre-built compile time utilities don't exist to run on 64-bit Linux