Cron doesn't read $home/lib/profile before executing jobs when host is
'local', but it does when host is named explicitly.

See:
http://lists.cse.psu.edu/archives/9fans/2007-March/051971.html
http://lists.cse.psu.edu/archives/9fans/2007-March/051996.html

Notes:
Wed Mar 28 12:22:47 EDT 2007 geoff
    already implemented; will be pushed to sources once it's tested.


Reference: /n/sources/patch/sorry/cron-namespace
Date: Wed Mar 28 13:19:45 CES 2007
Signed-off-by: hdd@voidness.de
Reviewed-by: geoff

--- /sys/src/cmd/auth/cron.c	Wed Mar 28 00:57:31 2007
+++ /sys/src/cmd/auth/cron.c	Wed Mar 28 00:57:26 2007
@@ -512,7 +512,8 @@
 			_exits(0);
 		}
 syslog(0, CRONLOG, "%s: ran '%s' on %s", user->name, j->cmd, j->host);
-		execl("/bin/rc", "rc", "-c", buf, nil);
+		putenv("service", "rx");
+		execl("/bin/rc", "rc", "-lc", buf, nil);
 		syslog(0, CRONLOG, "%s: exec failed for %s on %s: %r",
 			user->name, j->cmd, j->host);
 		_exits(0);