Function gio_sys::g_file_replace_readwrite

pub unsafe extern fn g_file_replace_readwrite(file: *mut GFile,
                                              etag: *const c_char,
                                              make_backup: gboolean,
                                              flags: GFileCreateFlags,
                                              cancellable: *mut GCancellable,
                                              error: *mut *mut GError)
                                              -> *mut GFileIOStream