Fix bogus option suggestions for RejectNegative options (PR driver/71651)

Fix bogus option suggestions for RejectNegative options (PR driver/71651)

gcc/ChangeLog:
	PR driver/71651
	* gcc.c (driver::build_option_suggestions): Pass "option" to
	add_misspelling_candidates.
	* opts-common.c (add_misspelling_candidates): Add "option" param;
	use it to avoid adding negated forms for options marked with
	RejectNegative.
	* opts.h (add_misspelling_candidates): Add "option" param.

gcc/testsuite/ChangeLog:
	PR driver/71651
	* gcc.dg/spellcheck-options-12.c: New test case.

From-SVN: r237880