PR c++/44127
gcc:
	* gimplify.c (gimplify_seq_add_stmt): No longer static.
	* gimple.h: Declare it.
	* gimple.c (gimple_build_eh_filter): No ops.
gcc/cp:
	* cp-gimplify.c (gimplify_must_not_throw_expr): Use
	gimple_build_eh_must_not_throw.

From-SVN: r159407