Add some warnings about resource usage and backup archives.
removeMetadata -> removeMetadataID.
Drop a superfluous comment.
Clean up newStorageID.
Clean up addStorageMetadata.
UpdateFromMetadata -> newStorageMetaDoc.
Update the package doc comment.
fileSet -> isFileInfoComplete.
doc.asMetadata -> docAsMetadata.
Fix a doc comment.
Fix a doc comment.
Use errors.Trace.
gc.IsNil -> jc.IsNil.
Give a little more explanation about the backups package.
Be a bit more careful about stored timestamps.
Add more info to a comment.
txnOp -> txnOpBase.
*DBConnInfo -> DBConnInfo.
Fix a typo.
Fold newMongoConnInfo into NewDBInfo().