GPIB__Initialize (ul_pbar_gpib)

 *  Synopsis:
 *    #include <ul_pbar_gpib:gpib.h>
 *
 *    int GPIB__Initialize( void )
 *
 *  Function intent:
 *    GPIB__Initialize() initializes the GPIB I/O system private structures.
 *    and should be called before using any other GPIB__xxx functions.
 *  Function parameters:
 *    none
 *  Function return value:
 *    CBS_OK		success
 *    otherwise		error