fix the prefix that is used if PREFIX is not defined

emulators/linux_lib/pkg/INSTALL

@@ -1,5 +1,5 @@
 #!/bin/sh
-# $OpenBSD: INSTALL,v 1.3 2000/03/10 17:02:05 espie Exp $
+# $OpenBSD: INSTALL,v 1.4 2000/04/10 17:03:12 brad Exp $
 #
 # Pre/post-installation setup of linux_lib
 
@@ -7,7 +7,7 @@
 #
 set -e
 PATH=/bin:/usr/bin:/sbin:/usr/sbin
-PREFIX=${PKG_PREFIX:-/usr/local}
+PREFIX=${PKG_PREFIX:-/usr/local/emul/linux}
 
 # Function: tell the user what s/he needs to do to use the port just installed
 #