Do not check for existence of symlink source for the link action. This

does not work for link in subdirectory, and sometimes it is useful to
create symlink in advance for dynamically created device node.

MFC after:	1 week

etc/rc.d/devfs

@@ -44,7 +44,7 @@ read_devfs_conf()
 		while read action devicelist parameter; do
 			case "${action}" in
 			l*)	for device in ${devicelist}; do
-					if [ -c ${device} -a ! -e ${parameter} ]; then
+					if [ ! -e ${parameter} ]; then
 						ln -fs ${device} ${parameter}
 					fi
 				done