The original transactions's connection flags in ApiConnectRec are saved
in the IndexOperation before executing so that they can be restored
after execution. This is to ensure that any subsequent FK triggers run
with the original transaction's flag. But the saved flags in the
IndexOperations are not reset when the IndexOperation is finally
released. Due to this any subsequent transaction that uses the same
IndexOperation reads the dirty saved flags and produce inconsistent
results.

This patch fixes that by resetting the saved flags when the
indexOperation is released.

This patch also fixes another similar issue in the ApiConnectRecord.
When a transaction is newly started, the ApiConnectRecord has to be
initialised. But during the execution of the TCINDXREQ signal, this was
not being done properly. Due to this, a transaction could read the dirty
flags from the previous transaction and return inconsistent results.
This is fixed by properly initialising the ApiConnectRecord.