PR bootstrap/66304

	PR bootstrap/66304
config/
	* warnings.m4 (ACX_PROG_CXX_WARNING_OPTS)
	(ACX_PROG_CXX_WARNINGS_ARE_ERRORS)
	(ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC): New.
	(ACX_PROG_CC_WARNING_OPTS, ACX_PROG_CC_WARNING_ALMOST_PEDANTIC)
	(ACX_PROG_CC_WARNINGS_ARE_ERRORS): Push into C language context.
gcc/
	* configure.ac: Use ACX_PROG_CXX_WARNING_OPTS,
	ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC, and
	ACX_PROG_CXX_WARNINGS_ARE_ERRORS.
	* configure: Regenerate.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223763 138bc75d-0d04-0410-961f-82ee72b054a4