* Makefile.in (sub-makes): Pass the current value of LANGUAGES down

        to sub-makes to avoid building more passes than the user might have
        requested on the command line.
From Manfred Hollstein.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@14825 138bc75d-0d04-0410-961f-82ee72b054a4