[PATCH roland/nptl-sh] SH: Consolidate NPTL/non versions of vfork

[Roland McGrath]

> You missed the bit about the symbols:
> 
> The function should be defined as __libc_vfork, and the vfork, __vfork, and
> libc_hidden_def should only be defined if !NOT_IN_libc.

I see.  I've updated the branch.

Thanks,
Roland