PR c/14635
	* builtins.def (nan, nanf, nanl, nans, nansf, nansl): Change to
	DEF_GCC_BUILTIN.

testsuite:
	* builtins-1.c (nan, nans): Don't test.
	* builtins-30.c: Don't use nan, nanf, nanl.
	* builtins-35.c: New test.

From-SVN: r79736