[Chinook] auto-client update

[smontgom at bcgsc.ca]

over the next week, chinook will be implementing a completely new type of
client that will significantly aid in service discovery and job submission
from the command-line and within Perl-based software systems.

this would transition chinook from 1.x to 2.0 status.

to date:
- Batch file configuration I/O
- Batch file I/O

have been implemented.  Batch Files will be XML service definition files
that a user can modify and than submit to Chinook (with an associated
default or custom DiscoveryRule file)

two modes of executing will be available,

the batch_file_queue directory (batch files in this directory will be run
automatically by a listening service)
and run once execution (execute batch file and quit)

as part of this architecture, updates to database loading, dynamic
sequence readers, and abstracting configuration modifications will be
integrated.

cheers,
stephen