OK, well, here's what i can guess is what is needed for compat stuff
on sparc64.

	- 32 bit shared libraries must live under /emul/netbsd32, 
	including the ld.so for this library.

	- this means normal 1.5 `sparc' usr/lib/*.so* and
	usr/libexec/ld.*so, plus a.out libraries (shared) in to
	emul/aout/usr/lib. [*]

	- compat sunos & svr4 aren't going to work at all because
	they have not concept of being compiled as `64 bit' beyond
	actually compiling yet.  ie, there needs to be a 32 bit
	version of compat sunos, plus, a 32 bit & a 64 bit compat
	svr4.  currently, for sparc64, none of this is done AFAIK.
	maybe compat_svr4 as is works for 64 bit solaris binaries.


[*] it would be really cool if there was a `pkg' for installing
these items in place, like other compat pkgs.