- Addition of separate patch to rename varatt_external to varatt_external_oid and VARTAG_ONDISK to VARTAG_ONDISK_OID, in 0003.
Since you're already renaming things... ISTM "ondisk" has the potential for confusion, assuming that at some point we'll have the ability to store large datums directly in the filesystem (instead of breaking into chunks to live in a relation). VARTAG_DURABLE might be a better option.