Disable the LargeObjectManager with FDB SQL layer on creation to avoid
later, more sublte problems.
Fix the DatabaseMetadataTest#testSerialColumns to check for the correct
data type value.
merge tjoneslo: Disable large objects, fix types test

Merge pull request #28 from tjoneslo/pgjdbc/disable-large-objects
https://github.com/FoundationDB/sql-layer-adapter-jdbc/pull/28