[vivid] Version bumps + adjust Copyright ebuild headers
Version bump for sys-kernel/ubuntu-sources
[vivid] Version bump Qt5 packages to 5.3.2. Improve version checking in version_check.sh. Drop no longer needed unity-base/displayconfig and dev-qt/qtjsbackend
[vivid] dev-qt/linguist-tools-5.3.2 should be masked missing keyword
[vivid] Adjust keywords,unmask and use files