"postinstall fix" issues: motd; mtree

[Thomas Klausner <wiz%NetBSD.org@localhost>]

Hi!

Whenever I run postinstall fix after installing a -current snapshot,
it gets two things wrong:

1) it uses /usr/src//etc/motd to update /etc/motd, instead of
/usr/src/etc/motd.current (which is used in the build dir)

2) it breaks /etc/mtree/NetBSD.dist; the diff is basically:
+ cat /usr/src/etc/mtree/NetBSD.dist.base /usr/src/etc/mtree/NetBSD.dist.x86_64 
/usr/src/etc/mtree/NetBSD.dist.tests
- all directories in /usr/X11R7

I.e. it removes all /usr/X11R7 directories and adds the line
consisting of "cat /something".

Anyone interested in fixing this or should I send PRs?
 Thomas