#8 Specify alternative .psync.db on command line

[Phil McAllister]

Currently the tool stores ownership and permissions in
.psync.db at the root of the destination directory.

I suggest the option of specifying an alternative
.psync.db on the command line so the database can
reside in another directory or on another filesystem if
necessary. The reason for this request is as follows.

My current backup plan requires the whole drive to be
backed up weekly, the '/Users' data areas every 2 days
and the '/Library/WebServer' data to be backed up
nightly. They are all to lie within the structure:

/

Users/

Library/

WebServer/

i.e. as well as getting backed up on their own schedule,
the Users and WebServer directories also get backed up
on the weekly schedule for the whole drive.

The plan is fine, except I am left with 3 database files.
One in /, one in /Users and one in /Library/WebServer

It would be enormously advantageous to be able to
specify that the tool use the database in / for storing
data when backing up Users and WebServer directories.