Add packages and use flags to unity-portage.{pkeywords,punmask,puse}
Fix Raring libfriends gtkspell-3[vala] build to be same as Saucy version
Make unity-lens-video use vala:0.20
Fix Gentoo 'branding' icon and legalnotice.html installation for Saucy unity-base/unity
Comment on glib-2.36.3/gobject-introspection-1.36/vala:0.20 relationship