[dev-qt/qtx11extras] Remove QT5_TARGET_SUBDIRS.

It used to fail without it, but it works now.

Package-Manager: portage-2.2.7
[dev-qt/qtgui:5] Just depend on >=libxcb-1.10 now that it's in portage.

Package-Manager: portage-2.2.8-r1
[dev-qt] bump 5.2.1
[media-video/prismatik] New package.
Merge branch 'master' of git://git.overlays.gentoo.org/proj/qt
Merge branch 'master' into docs