Squashed commit of the following:

commit a3a47743592a13f83152499fb9aa98184a261dc5
Author: Ariel Weisberg <aweisberg@voltdb.com>
Date:   Tue Oct 14 17:16:53 2014 -0400

    For ENG-6546, address review comments

commit be2aa90d4a86f85124f41669ce51527b24efd0d0
Author: Ariel Weisberg <aweisberg@voltdb.com>
Date:   Mon Sep 29 16:22:05 2014 -0400

    For ENG-6546, fix casting pain by casting to Number instead of Integer or Long

commit d307ed882e1ab523fb884ebd358f2d06ebdb2dae
Author: Ariel Weisberg <aweisberg@voltdb.com>
Date:   Fri Sep 26 15:58:37 2014 -0400

    For ENG-6546, add tests for durability of last applied transaction ids for DR

commit 67b937f6fed79f96e3f23f42185cd402d01fa53e
Merge: 0e9284b fe66203
Author: Ariel Weisberg <aweisberg@voltdb.com>
Date:   Fri Sep 26 11:53:55 2014 -0400

    For ENG-6546, merge in latest from DR integration

commit 0e9284b03ad07b57f8840ee8dcf0c2d83ea16886
Author: Ariel Weisberg <aweisberg@voltdb.com>
Date:   Fri Sep 12 17:09:33 2014 -0400

    For ENG-6546, fix a bug where the wrong JSON object was populated

commit 69219b5f246cc7b31ee4e9ae82627904fd8a1171
Author: Ariel Weisberg <aweisberg@voltdb.com>
Date:   Thu Sep 11 17:01:43 2014 -0400

    For ENG-6859, reduce noise from shutdown in tests

commit 209a873d4b97f0c7c519404ed17c5a061d26cfdb
Author: Ariel Weisberg <aweisberg@voltdb.com>
Date:   Thu Sep 11 16:40:22 2014 -0400

    For ENG-6546, last few bits to connect things together

commit 2795dfe452a27765261c2c9fab8fa74880c145ca
Merge: e971f51 d48c63c
Author: Ariel Weisberg <aweisberg@voltdb.com>
Date:   Thu Sep 11 12:52:42 2014 -0400

    Merge branch 'dr-integration-prime' into ENG-6546

commit e971f51f85b1aeffb3dcb990d90055ac992ef6f3
Author: Ariel Weisberg <aweisberg@voltdb.com>
Date:   Tue Sep 9 18:04:12 2014 -0400

    For ENG-6546, a bunch of code in the direction of storing and propagating remote DC unique ids