Fix jdbc DML fails when operated in raw mode and auto commit is off.
Fix jdbc DML fails when operated in raw mode and auto commit is off.

When autocommit is off, bind() needs to start a transaction (if not
already in) for DMLs and do an insert lock if sequences are used in
replication mode. The fix was made into pgpool-II
3.3.2. Unfortunately, the fix forgot that it should be applied only
for replication mode. For other mode, that is not needed at all. The
bug reported in #92 happens when operated in raw mode and auto commit
is off.  When parse() executes it does not start a transaction because
we are in raw mode.  Then bind() starts a transaction by issuing
"BEGIN" which destroys the unnamed statement and the failure occurs.

Per bug #92.

treasure-data/prestogres,treasure-data/prestogres,treasure-data/prestogres,treasure-data/prestogres,treasure-data/prestogres,treasure-data/prestogres,treasure-data/prestogres