Fix for bug 1326458: 8813 error accesing result set from T2

The problem happens for explain statement because T2 driver does not
handle sql query type SQL_EXE_UTIL correctly.  For sql query types
SQL_EXE_UTIL when there are ouputs it should behave same as
SQL_SELECT_NON_UNIQUE where ExecFetchClose is not called during the
execute of a result set and just execute is called.

Change-Id: I2e29a054c9afbf119d738eda3092710563295c8f
Merge "Fix for bug 1326458: 8813 error accesing result set from T2"