De-register fpu completion code.

There are pending changes to some of these files, and this would get in the
way.

ok claudio@ kettenis@

Remove vestigial bits of 32-bit binaries support; drop the `64' suffix in
struct names when the matching `32' flavour got removed.

Joint work with cheloha@, all bugs mine.

There was hope, at one time, of sharing fpu/ with sparc. That's still
possible, but not with #ifdef SUN4U all over the place. The define should
be _v9 or __sparc64__ since it will equally well appl

There was hope, at one time, of sharing fpu/ with sparc. That's still
possible, but not with #ifdef SUN4U all over the place. The define should
be _v9 or __sparc64__ since it will equally well apply to all v9 machines.
We'll burn that bridge before we cross it.

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Remove the advertising clause in the UCB license which Berkeley
rescinded 22 July 1999. Proofed by myself and Theo.

define FPE_STATE so that DEBUG will compile

Add some debugging stuff: a function to dump all of the fpstate64 fields.

Import netbsd's fpu handling (modified to be separate from sparc); this is
for paranoia's sake (don't want to break sparc32 while hacking on it).
Real work by art.