Nobody complained on the team-list, so commit it ...

Nobody complained on the team-list, so commit it ...

This implements some kind of improved AFS support for Samba on Linux with
OpenAFS 1.2.10. ./configure --with-fake-kaserver assumes that you have
OpenAFS on your machine. To use this, you have to put the AFS server's KeyFile
into secrets.tdb with 'net afskey'. If this is done, on each tree connect
smbd creates a Kerberos V4 ticket suitable for use by the AFS client and
gives it to the kernel via the AFS syscall. This is meant to be very
light-weight, so I did not link in a whole lot of libraries to be more
platform-independent using the ka_SetToken function call.

Volker