Ports defying WRKDIRPREFIX

[[LoN]Kamikaze]

It has come to my attention that the line

	${CAT} pkg-message

breaks when WRKDIRPREFIX is set, because the shell command will be invoked
from WRKDIRPREFIX/PORTSDIR/category/port instead of PORTSDIR/category/port

I think this is a new problem in bsd.port.mk, but I am not certain about
this. A quick solution is to replace the line with

	${CAT} ${.CURDIR}/pkg-message

Here is a list of ports if currently affected ports:

audio/gdesklets-xmms/Makefile
audio/gnuitar/Makefile
audio/xmms-sexypsf/Makefile
comms/gmfsk/Makefile
deskutils/multi-backgrounds-daemon/Makefile
devel/libtap/Makefile
finance/ledger/Makefile
ftp/tnftpd/Makefile
games/linux-steam/Makefile
games/wmquake/Makefile
irc/gdesklets-irc/Makefile
lang/fpc-devel/Makefile
misc/fortune-mod-bofh/Makefile
net-im/jabber-aim/Makefile
net-mgmt/nrpep/Makefile
net/ccxstream/Makefile
sysutils/bacula-server-devel/Makefile
sysutils/gapcmon/Makefile
sysutils/graphicboot/Makefile
sysutils/uschedule/Makefile
sysutils/bsdstats/Makefile
www/dansguardian-devel/Makefile
www/dansguardian/Makefile
www/p5-Catalyst-Runtime/Makefile
x11-clocks/gdesklets-countdown/Makefile
x11-clocks/gdesklets-ebichuclock/Makefile
x11-wm/fluxspace/Makefile
x11/bgrot/Makefile
x11/gdesklets-tasklist/Makefile