* gcc-interface/utils2.c (build_binary_op): Add a NO_FOLD
	argument.  Disable folding when true.
	* gcc-interface/gigi.h (choices_to_gnu): Remove declaration.
	(build_binary_op): Update signature and comment.
	* gcc-interface/decl.c (choices_to_gnu): Make static.  Disable
	folding for all calls to build_binary_op.

From-SVN: r240978