Squashed commit of the following:

commit c503bedfda20fd39fd1fd8499c12b257ba96ebb4
Author: Holly Becker <hbecker@artefactual.com>
Date:   Tue May 14 16:48:47 2013 -0700

    Added new chain for new watched directory

    CompressionAIPDecision watched directory now starts up Compress AIP
    chain.

    refs #5084

commit 1ed65d192f803bbd4aa72e62d9f4ce41a8514ac1
Author: Holly Becker <hbecker@artefactual.com>
Date:   Tue May 14 15:58:20 2013 -0700

    Prepare AIP now moves SIP to watched directory

    refs #5084