Make nxkeygen and nxsetup work when invoked as symlinks.
https://bugzilla.redhat.com/616993

diff -up freenx-server-0.7.3/nxkeygen.nxpath freenx-server-0.7.3/nxkeygen
--- freenx-server-0.7.3/nxkeygen.nxpath	2010-07-21 23:45:11.739315044 +0300
+++ freenx-server-0.7.3/nxkeygen	2010-07-21 23:47:15.171315008 +0300
@@ -16,7 +16,7 @@
 # ========================================================================
 
 # Read the config file
-. $(PATH=$(cd $(dirname $0) && pwd):$PATH which nxloadconfig) --
+. $(PATH=$(dirname $(readlink -f $(type -P $0 || echo $0))):$PATH which nxloadconfig) --
 
 [ -z "$NX_KEY_DIR" ] && NX_KEY_DIR="$NX_HOME_DIR/.ssh"
 DATE="`date '+%Y%m%d-%H%M%S'`"
diff -up freenx-server-0.7.3/nxsetup.nxpath freenx-server-0.7.3/nxsetup
--- freenx-server-0.7.3/nxsetup.nxpath	2008-03-11 01:01:03.000000000 +0200
+++ freenx-server-0.7.3/nxsetup	2010-07-21 23:47:25.699318736 +0300
@@ -137,7 +137,7 @@ parse_cmdline()
 parse_cmdline "$@"
 
 # Read the config file
-. $(PATH=$(cd $(dirname $0) && pwd):$PATH which nxloadconfig) --
+. $(PATH=$(dirname $(readlink -f $(type -P $0 || echo $0))):$PATH which nxloadconfig) --
 
 run_nscd()
 {
@@ -380,7 +380,7 @@ test_nx()
 	echo ""
 	echo "----> Testing your nxserver configuration ..."
 	[ "$IGNORE_ERRORS" = "yes" ] && NO_ERRORS="--ignore-errors"
-	. $(PATH=$(cd $(dirname $0) && pwd):$PATH which nxloadconfig) --check $NO_ERRORS
+	. $(PATH=$(dirname $(readlink -f $(type -P $0 || echo $0))):$PATH which nxloadconfig) --check $NO_ERRORS
 	echo "<---- done"
 	echo ""
 	echo "----> Testing your nxserver connection ..."