Remove switch for Qt5

Lxqt dropped Qt4 support, thus this is not needed anymore.
See commit b11ac14c5efa430e028f847cf3eefc8b8c5d150e and
2bf3372b424b4d371b944928f7a3800d0c22a692 in liblxqt repo for proof of
that.

Version 0.8 still has it, from then on they will change it.
Merge pull request #87 from jubalh/master

[lxqt-base/liblxqt] remove switch for Qt5 from live ebuild as it is default now
[razorqt-base]: remove category and all ebuilds as no longer supported
Remove some razorqt leftovers.
Remove qtdesktop set.

I doubt anyone is maintaining it.
[razorqt-base/libqtxdg] restore package back as LXQt depends on it.

In the future it should be moved to lxqt-base category
razorqt-base/libqtxdg move to dev-libs
[razorqt-base/libqtxdg -> dev-libs/libqtxdg] move dependencies in the rest of packages
[profiles/updates] Delete 4Q-2013.

It contains some weird razorqt package moves that don't seem
to make sense or no longer apply, and might confuse portage.
[qt5-build.eclass] Tweak qconfig.h sed expression to avoid problems.

See commit f1c2941f8b40e41e3413f4465c2edec1bb1a78a8
[dev-qt/qtcore:4] Move qconfig.h sed to qt4-build-multilib.eclass
[dev-qt/qtcore:4] Drop keepdir.

Package-Manager: portage-2.2.14
[dev-qt/qtcore:4] Move and simplify env.d file installation to eclass.
[dev-qt/qtcore:4] Move the rest of multilib_src_install_all to the eclass.
[profiles] Remove redundant Qt 4.8.6 mask.
[dev-qt/qtchooser] Tests seem to require qt5.

Package-Manager: portage-2.2.14
[dev-qt/qtchooser] Delete 0_p20140613 (now in tree) and add live ebuild.

Package-Manager: portage-2.2.14
[qt5-build.eclass] Install global docs.

Thanks to Eugene Shalygin and Paweł Stankowski in bug 457028.
[dev-qt/*] s/Nokia/upstream/
Qt 4.8.6 moved to the main tree.