Fix couple of small bugs, don't need to try and re-install
ports-mgmt/pkg and misc/{pcbsd|trueos}-base, those are implicit
at the start of the upgrade code
Add pruning of old BE's before doing package upgrades
Convert pc-adsldap to Qt5
Merge branch 'master' of github.com:pcbsd/pcbsd
Convert pc-bluetoothmanager to Qt5
(Ken) Convert pc-bootconfig to Qt5
(ken) Convert pc-bugreport to Qt5
(ken) Convert pc-controlpanel to Qt5
(ken) Remove pc-crashhandler from the src-qt5 tree: old utility that is no longer used
Couple more fixes to update manager

 - First, kill syscache before starting pkg updates, since the database
   may be locked read-only

-  Add a new fbsdupdate function, which does freebsd-update in the chroot / prepped BE
   If there are package updates, do these at the same time as freebsd-update

-  Simplify some of the functions, breakout some bits into sub-functions
Merge branch 'master' of github.com:pcbsd/pcbsd
add fbsdupdate to show_usage()
(ken) Convert pc-dmconf to Qt5
(ken) Convert pc-firstbootgui to Qt5
(ken) Convert pc-installgui to Qt5
(ken) Convert pc-mixer to Qt5
Change keylength to 128 -> 256 by default for geli installs
(ken) Convert pc-mounttray to Qt5
(ken) Convert pc-netmanager to Qt5
Add linux-compat-version we can read before doing pkg upgrades to make sure that
linux osrelease is correct for new pkgs being installed