New modules system and vfs_done

[Andrew Bartlett]

As per my recent commit, the new (VFS) modules system completely breaks
on tree disconnect!

We need to separate the different cases - the compat and the central
modules, and provide either a flag or a function pointer to the correct
way to shut down a module.

The code in conn_close is really in the wrong place - it's dealing with
the VFS, not the connection. 

And how should a internal module 'end' it's operations anyway?  We don't
seem to have that coded up at all...

Andrew Bartlett
-- 
Andrew Bartlett                                 abartlet at pcug.org.au
Manager, Authentication Subsystems, Samba Team  abartlet at samba.org
Student Network Administrator, Hawker College   abartlet at hawkerc.net
http://samba.org     http://build.samba.org     http://hawkerc.net
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