[Dovecot] Patch for second fs quota under solaris

[Timo Sirainen]

On Thu, 2010-07-08 at 12:08 +0200, Juergen Obermann wrote:
>   quota = fs:Home-Verzeichnis:noenforcing
>   quota2 = fs:INBOX:noenforcing:mount=/var/mail
> 
> This second quota did not work, but now I found the reason why.
> The mountpoint_get in src/lib/mountpoint.c needs to call resetmnttab to
> find the filesystem for the second quota root (see man resetmnttab).

I thought the resetmnttab() is really only useful when the mounts
change.. But anyway, committed the patch to v2.0 and v1.2.

> The following patches correct this and also adds some debugging code to
> src/plugins/quota/quota-fs.c to show the processing of quota2.

Committed a bit different version of the patch to v2.0.