Allow for /usr/bin/env when parsing the shebang line from an

interpreted $command.  Some "portable" sofware packages use such a
line to skip the task of figuring out the absolute pathname of the
interpreter at install time, e.g.:

	#!/usr/bin/env python

It is insecure, but a popular book on Python seems to have advised
it to a wide audience.  Hence a number of such scripts in the ports,
mostly written in Python.

PR:		bin/100287
MFC after:	1 week

etc/rc.subr

@@ -264,6 +264,11 @@ _find_processes()
 		read _interp < ${_chroot:-}/$_procname	# read interpreter name
 		_interp=${_interp#\#!}		# strip #!
 		set -- $_interp
+		case $1 in
+		*/bin/env)
+			shift			# drop env to get real name
+			;;
+		esac
 		if [ $_interpreter != $1 ]; then
 			warn "\$command_interpreter $_interpreter != $1"
 		fi