CBD-1357: win-32 builds use Visual Studio 10.0, clone voltron from internal mirror

Change-Id: I1d78632eb01a911d709b17264db018d123fc0b9c
Reviewed-on: http://review.couchbase.org/36164
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>