Recent updates

There have been several updates over the last week. The libiconv library has been updated to 1.15 while harfbuzz was updated to 1.4.3. The libgpg-error library was updated to 1.27, libbluray was updated to 1.0.0 and gnutls was updated to the next stable branch with a big bump up to version 3.5.9. 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.