[dev-qt/qtsql] Switch to virtual/postgresql.

Package-Manager: portage-2.2.14
[razorqt-base/libqtxdg] fix bug 528070, thanks to Alpha Bravo and jleclanche
[x11-misc/pcmanfm-qt] dependency on x11-misc/xdg-utils added after discussion with upstream
[app-crypt/pinentry] Sync with portage and add missing patches (bug 528060).

Package-Manager: portage-2.2.14
Merge branch 'master' into docs