devel/glib20: revert update to 2.68.2 2.68.2 へのアップデート取り消し なんで API が変わるんだよ
devel/glib20 was touched without desktop@ approval and properly passed exp-run which caused a massive build failures for critical parts of portstree such as *webkit*, grstreamer* and many others due to incompatible changes in the new glib API.
Revert, bump PORTEPOCH and freeze at 2.66.* branch till all consumers will be adopted to new API.