[dev-qt/qtwidgets:5] Remove accessible plugin from ebuild

Upstream has made the accessibility plugin part of the normal widgets
code, instead of being a separate plugin. This fixes build failures
stating that "src/plugins/accessible" cannot be found when building with
upstream commit eaee2bd0.
Merge pull request #41 from CmdrMoozy/master

[dev-qt/qtwidgets:5] Remove accessible plugin from ebuild
[Qt4] Migrate all live ebuilds to EAPI=5 and qt4-build-multilib.eclass
[lxqt-base/lxqt-about] Set S wrt bug #510650.

Package-Manager: portage-2.2.8-r1
[lxqt-base/lxqt-meta] Set S wrt bug #510398.

Package-Manager: portage-2.2.8-r1
RepoMan-Options: --force
[x11-misc/obconf-qt] Set S wrt bug #510214.

Package-Manager: portage-2.2.8-r1
Merge branch 'master' into docs