JCLOUDS-534 Avoid runtime incompatibility introduced by Guava's closeQuietly.
JCLOUDS-750: Add @AutoValue to pom.xml and refactor VaultMetadata
JCLOUDS-750: Refactor PartMetadata using @AutoValue
JCLOUDS-750: Refactor some collections using @AutoValue
JCLOUDS-750: Refactor JobMetadata using @AutoValue
JCLOUDS-750: Refactor GlacierError using @AutoValue
JCLOUDS-750: Refactor ArchiveMetadata using @AutoValue