multimedia/mkvtoolnix:

• Update to 8.5.2.
• WXGTK support has been removed upstream in favour of Qt
• Amend BROKEN message
• Enable verbose build when PACKAGE_BUILDING is set (instead of BATCH)
• Decouple CURL option for online update checks from QT5
• Add NLS option
• Sort plist

PR: based on 204312
Submitted by: yuri@rawbw.com