Unfortunately, this also affects some ports using QT3 as a GUI toolkit.

Changes to infrastructure files:
- bsd.kde.mk : obsolete, remove
- bsd.qt.mk : note that a CONFLICTS_BUILD line can probably go after a while
- CHANGES : document the removals from bsd.port.mk
- KNOBS : remove KDE and QT (KDE4 and QT4 should be used instead)
- MOVED : add the removed ports

PR:		ports/180745
Submitted by:	rene
Approved by:	portmgr (bapt)
Exp-run by:	bapt