Add error check that only MATCH SIMPLE is requested.
Add casts from/to BINARY as well as VARBINARY. For a BINARY target, extend with zeros as needed.
Add a simple test for the new cases.
merge MMcM: Add error check that only MATCH SIMPLE is requested.

Merge pull request #1138 from MMcM/sql-layer/fk-match-simple
https://github.com/FoundationDB/sql-layer/pull/1138
merge MMcM: Add missing CASTs from/to BINARY

Merge pull request #1139 from MMcM/sql-layer/cast-from-binary
https://github.com/FoundationDB/sql-layer/pull/1139
Merge remote-tracking branch 'github/master'