[FIXED] unable to emerge unity because gcr compile fails

[klz]

I was having problems emerging app-crypt/gcr when i wanted to get unity-base/unity-meta. The introspection useflag is needed for unity, and with this gcr would not compile on my system. Eventually i noticed this: "Couldn't find include 'Gtk-3.0.gir'" in the compile logs of gcr...
It turned out i needed to recompile gtk+ with the introspection useflag included.

Hopefully this helps some ppl.

ps. unity-base/unity-meta is from the unity-gentoo overlay
pps. why didn't portage 'notice' this?