S3Utils: Fix retry predicate
ZkCoordinator: Make addSegment, addSegments idempotent
Coordinator: Stop databaseRuleManager in stopBeingLeader
Coordinator: Link service announcement to leadership
Merge pull request #329 from metamx/segment-load-idempotent

ZkCoordinator: Make addSegment, addSegments idempotent
Merge pull request #328 from metamx/coordinator-leader-discovery

Coordinator: Link service announcement to leadership
fix redirection issues with master and overlord
Merge branch 'master' of github.com:metamx/druid
S3 storage: enable archiving in addition to deleting unused segments
default to archiving segments + docs
add archive task
consolidate path functions
fix docs
better naming
fix cut-n-paste typo
throw exception instead of just printing a warning
update for new interfaces
separate segment mover and segment archiver
separate move and archive tasks
rename SegmentMoveAction to SegmentMetadataUpdateAction