* rtl.h (union rtunion_def): Remove rt_bit member.
	(XBITMAP, X0BITMAP, XCBITMAP): Remove.
	* print-rtl (print_rtx): Do not print the member.
	* gengtype.c (adjust_field_rtx_def): Do not handle it.
	* gengenrtl.c (type_from_format): Likewise.
	(accessor_from_format): Likewise.

From-SVN: r159698