Libgcrypt, x264 updates

The following projects have been updated:

• ffmpeg was updated to 4.4.r100893.
• Libgcrypt was updated to 1.9.0 then to 1.9.1.
• x264 was updated to 0.161.r3043.

Any projects that have a dependency that was updated has also been updated to build with the latest versions of the new libraries as well.