[dev-qt/qtgui-5.2.0] Allow fixed x11-libs/libxcb-1.10 to satisfy deps

ABI break introduced in v1.9.2 and persisting in v1.9.3 was fixed in v1.10 (available via x11 overlay).

Package-Manager: portage-2.2.8
Merge branch 'master' of git+ssh://git.overlays.gentoo.org/proj/qt
x11-themes/qtcurve: sync with official tree
x11-themes/qtcurve: do not apply patch in live version
[qt5-build.eclass] Attempt to fix bug 451456, at least for non-qtbase modules.
[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.