PATCH: Add Linux/x32 sysdep.h

[Roland McGrath]

That looks like it could pretty much all be done just by using R*_LP et al
macros in the existing linux/x86_64/sysdep.h macros.  That would avoid the
duplication.

Leave the SYSCALL_RETURN_INT64 hack out until you're doing the llseek
change that actually requires it.  Then we can look at it in context and
decide what is the cleanest way to handle the special case.


Thanks,
Roland