Changed the open mode enum, return FILE ptr from cibyl_fops_t::open, added keep_uri and externed cibyl_file_free
Changed the open mode enum, return FILE ptr from cibyl_fops_t::open, added
keep_uri and externed cibyl_file_free


SimonKagstrom/cibyl,SimonKagstrom/cibyl,SimonKagstrom/cibyl,SimonKagstrom/cibyl,SimonKagstrom/cibyl