* app.c (do_scrub_begin): If tc_comment_chars is not defined,

	* app.c (do_scrub_begin): If tc_comment_chars is not defined,
	define it to comment_chars.  Use tc_comment_chars rather than
	comment_chars.
	(do_scrub_chars): Use tc_comment_chars rather than comment_chars.
	* config/tc-m68k.h (tc_comment_chars): Define.
	(m68k_comment_chars): Declare.
	* config/tc-m68k.c (m68k_comment_chars): Rename from
	comment_chars.  Change into a pointer rather than an array.
	(md_longopts): Add "bitwise-or".
	(md_parse_option): Handle OPTION_BITWISE_OR.
	(md_show_usage): Mention --bitwise-or.
	* doc/c-m68k.texi: Document --bitwise-or.
PR 9518.