The folder containing the files need now to be removed

This commit works towards issue cta/CTA#436.

Please note that neither setAutcommitMode() and getAutcommitMode()
should be called for now.  This commit is preparing the future
interface of the code.

Set default value of autocommitMode parameter of executeQuery() and executeNonQuery() to AutocommitMode::AUTOCOMMIT_ON

Fixed cta/CTA#364 RdbmsArchiveFileItorImpl constructor should NOT return database connection to pool

Moved autocommitMode parameter from Stmt constructor to Stmt::executeQuery() and Stmt::executeNonQuery()

Renamed rdbms::AutocommitMode::ON and rdbms::AutocommitMode::OFF to rdbms::AutocommitMode::AUTOCOMMIT_ON and rdbms::AutocommitMode::OFF respectively

Added LoginTest unit-tests parseStream_invalid_in_memory, parseStream_invalid_oracle and parseStream_invalid_sqlite

Removed redundant 'find_package (oracle-instantclient REQUIRED)' and 'include_directories (INSTANTCLIENT_INCLUDE_DIRS)' from rdbms/CMakeLists.txt

My previous commit only removed throw() from the hpp files.