[Dovecot] CHANGE REQUEST: Move config files out of main $sysconfdir

[Brian G. Peterson]

Currently, dovecot places it's config files in $sysconfdir

In Makefile.am, this is defines as:

confdir = $(sysconfdir)

It would be far more friendly to an already overloaded /etc/ directory, 
and easier to locate the files, to follow the now-common convention and 
place files in $sysconfdir / dovecot / ... on most systems this would 
mean:

/etc/dovecot/

If there is only a dovecot.conf, it doesn't really matter, but when 
additional config files get added for ldap, sql, sieve, it starts to add 
up.

Some distributions already make this change, but placing this change in 
the dovecot core would make it unnecessary for downstream packagers to 
make a change to the core dovecot distribution files.

Regards,

   - Brian