PATCH: Move sysdeps/x86_64/Implies to sysdeps/x86_64/64

[Roland McGrath]

It seems to me that everything except wordsize-NN should be in a shared
file rather than being repeated in x32/Implies and 64/Implies.

Can you elaborate on why you need to add x86_64/fpu explicitly
rather than letting the standard configure logic do it?

If we are actually putting x86_64/fpu in the list unconditionally, then I
don't really see a point to the subdirectory at all.  If there can never be
a --without-fp configuration for x86_64, all the x86_64/fpu contents can
just move up into x86_64/.

I don't like the idea of a proliferation of synthetic subdirectories like
x86_64/common just to get around the semantics of Implies files.  Perhaps
it would be better to extend the syntax of Implies files with a way to say
that a directory comes after parents rather than before.


Thanks,
Roland