[Checkins] SVN: relstorage/branches/postgres_blob_oid/ Create a branch for the Postgres BLOB oid refactoring effort.

[Martijn Pieters]

Log message for revision 121921:
  Create a branch for the Postgres BLOB oid refactoring effort.
  
  Currently, RelStorage 1.5.0 stores ZODB blobs chunked in BYTEA columns. This
  branch will move these to OID columns, in much larger (up to 2GB) chunks.
  

Changed:
  A   relstorage/branches/postgres_blob_oid/

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