* go-gcc.cc: #include "langhooks.h".
	(Gcc_backend::Gcc_backend): Add constructor.
	(Gcc_backend::lookup_function): New function.
	(Gcc_backend::define_builtin): New private function.
	(Gcc_backend::gcc_backend): Remove.
	(go_get_backend): Use new to create new Gcc_backend.

From-SVN: r209941