update for recent changes

lksh.1

@@ -1,4 +1,4 @@
-.\" $MirOS: src/bin/mksh/lksh.1,v 1.15 2015/10/09 21:36:56 tg Exp $
+.\" $MirOS: src/bin/mksh/lksh.1,v 1.16 2015/12/12 22:25:14 tg Exp $
 .\"-
 .\" Copyright (c) 2008, 2009, 2010, 2012, 2013, 2015
 .\"	mirabilos <m@mirbsd.org>
@@ -72,7 +72,7 @@
 .\" with -mandoc, it might implement .Mx itself, but we want to
 .\" use our own definition. And .Dd must come *first*, always.
 .\"
-.Dd $Mdocdate: October 9 2015 $
+.Dd $Mdocdate: December 12 2015 $
 .\"
 .\" Check which macro package we use, and do other -mdoc setup.
 .\"
@@ -302,6 +302,12 @@ instead of locally scoping them.
 .Pp
 .Pa https://www.mirbsd.org/ksh\-chan.htm
 .Sh CAVEATS
+The distinction between the shell variants
+.Pq Nm lksh / Nm mksh
+and shell flags
+.Pq Fl o Ic posix / Ic sh
+will be reworked for an upcoming release.
+.Pp
 To use
 .Nm
 as