[PATCH] add ppc64 specific code

[Roland McGrath]

The function dl_reloc_overflow needs to be named _dl_reloc_overflow
instead.  Rather than using asm's with .hidden, you should just use
attribute_hidden on the extern decl in dl-machine.h.

Please fix those things and resend this patch (I could add the other files,
but I will wait for you to resend the whole set from this message in case
you have further tweaked some other files).