Setting the location of proc independent of configdir

[Ian G Batten]

I was interested to see someone suggesting putting proc into tmpfs.   
That's slightly painful if /var/imap is in ZFS: the order in which  
mounts take place means you can't just put /var/imap/proc tmpfs into / 
etc/vfstab if /var/imap is coming in through ZFS.  A glance at the  
source code says that proc is hardwired to be configdir/proc.  Would  
it be worth considering making procdir: a configuration option, so  
that it can easily be put somewhere which isn't under configdir:?   
Indeed, for a lot of people, just shoving it in /tmp/cyrusproc would  
be a good option.

ian