Packages to update in Haiku repo

[pulkomandy]

Things to not forget for the beta3 release.

Update at least the following packages in the haiku repo and the release image:

• ICU to version 66 (or later), needed for WebKit updates
• There seem to be problems with gawk not being available for gcc2 anymore, it's suggested to switch to mawk (faster, smaller, used in debian and ubuntu as the default awk install)
• Add tnftp as we have removed the built-in FTP client in the haiku package
• Update Noto fonts (otherwise for example the backspace symbol in Keymap prefs is not showing)
• WebKit (prepare a new release after ICU has been updated and builders are running pre-beta3 versions of Haiku)
• New Mesa version?