make check fails if C++ is enabled

[Roland McGrath]

> Index: ChangeLog
> from  Alexandre Oliva  <aoliva@redhat.com>
> 
> 	* Makefile ($(objpfx)c++-types-check.out): Don't use $^.

I put in a better fix for this.  Please include standard ChangeLog headers
with your log entries when posting.


Thanks,
Roland