Add (not enabled by default) support for auto-fetching keys from a keyserver.  Originally written for the debian-women DAK install.

Update variables for 3.1r2. [troup]  Update SigningKeyIds.  Add amd64 to >= testing.  Drop sh from experimental.  Move experimental to dists/.  Add Dir::ProposedUpdates and Architectures::amd64. [ajt]

when checking in queue directories, also check new proposed-updates queue dir.  [rmurray]  Add support for proposed-updates-new queue.  [ajt].

ssh to buildd and run 'trigger.daily before we 'finish'.  Drop merkel push. [rmurray].  Add progress timestamps.  [ajt].

Add amd64 to >= testing.  Drop sh from experimental.  Move experimental to dists/.  Drop uncompressed Packages files for testing. [ajt]  Add udeb tree for proposed-updates [troup]