Harfbuzz, GCrypt, GnuTLS, x264 and Speex Updated

There have been many updates this round with Harfbuzz being updated to 1.3.4 and GCrypt being updated to the latest 1.7.4. As well as these GnuTLS is now at version 3.4.17 and Speex has been updated to the final 1.2.0 release version. There was also a bump with x264 to the latest stable as well as minor bump to modplug. As always the latest releases are available on the Projects page while still allowing access to any previously supported releases. The latest FFmpeg build has also been updated to use the latest versions of the new libraries as well.