c-lex.c (interpret_float): Give a pedwarn rather than a warning for an out-of-range floating point constant.

	* c-lex.c (interpret_float): Give a pedwarn rather than a warning
	for an out-of-range floating point constant.
	* builtins.c (fold_builtin_inf): Give a pedwarn rather than a
	warning if the target format does not support infinities.

testsuite:
	* gcc.dg/float-range-1.c, gcc.dg/float-range-2.c: New tests.

From-SVN: r88793