Remove some unused imports.
Merge branch 'master' into FDBTransactionServiceDirectorySubspaceWrapper
Have the FDBTransactionService make one last attempt to catch/rethrow
any FDBExceptions which may have snuck out from other than the commit
processing.
Fix YamlTester auto retrying to not hide errors
Fix dropped table names
Tweak sync to reduce duplication and disable tests of broken behavior
Organize CheckTime and add/use another test mode
Convert FDBNameGenerator to use TransactionState (not Transaction) for
access to session for exception handling.
Add try/catch/wrap/throw for the FDB Exceptions throughout the FDBStore
and FDBSchemaManager code.
merge nathanlws: PendingIndexCheck CheckTime helpers

Merge pull request #1274 from nathanlws/sql-layer/check-time-cleanup
https://github.com/FoundationDB/sql-layer/pull/1274
merge nathanlws: Minor FK test fixes

Merge pull request #1273 from nathanlws/sql-layer/fk-test-fixes
https://github.com/FoundationDB/sql-layer/pull/1273
merge tjoneslo: Fdb transaction service directory subspace wrapper

Merge pull request #1275 from tjoneslo/sql-layer/FDBTransactionServiceDirectorySubspaceWrapper
https://github.com/FoundationDB/sql-layer/pull/1275