NEW bonus feature: doesn't leak memory like a sieve any more!
 * Fixed operation callbacks not being disposed (massive memory leaks).
 * Fixed Parameter buffers not being disposed (variable size memory leaks).
 * Make Statement::boundColumns_/boundParameters_ get disposed sooner when Free() is called, and add VirtualFree() override to EosHandle to allow it.
 * Fix Statement::getData not disposing of its buffer (variable size memory leaks).
 * Fix Statement::putData not disposing of its buffer if the buffer was passed in as an argument (variable size memory leaks).