io.c (check_format): Use G_(...) instead of _(...) for error values...

io.c (check_format): Use G_(...) instead of _(...) for error values...

	* io.c (check_format): Use G_(...) instead of _(...) for error values,
	append " in format string at %L" to all strings but unexpected_element,
	use error as gfc_error formating string instead of
	"%s in format string at %L".  Formatting fixes.

From-SVN: r272222