Fix the aotocommit mode for connections established with Oracle ODBC driver in Linux.

Issue: Oracle ODBC driver for Linux ignores setup autocommit mode during driver initialization before a connection to database has been established. Whereas odbc module in erlang sets autocommit mode before the connection has been established and autocommit mode is true by default it is impossible to turn out autocommit mode for oracle connections.

Sulution: This patch sets autocommit mode after a connection to database has been established. The patch changes only C source file odbcserver.c and don't change any erlang source files of odbc module.

The patches for older versions of erlang/otp are here - https://github.com/RubberCthulhu/erlang-odbc-oracle-fix