fix bug with metadata only deposit, and update SSS to support Metadata-Relevant header (although it doesn't actually use the header in any meaningful way
fix bug with metadata only deposit, and update SSS to support Metadata-Relevant header (although it doesn't actually use the header in any meaningful way

git-svn-id: be288276da579bf930a6c6986c8ed5da68b822f6@293 2bf6ea0f-123d-0410-b71a-f1a21eb24612

fcrepo4-archive/sss,fcrepo4-labs/sss