Complicated config puzzle (m68k-apollo-bsd, v810, aix4.3+ maintainers please reply)

[Nathanael Nerode <neroden at twcny dot rr dot com>]

I'm trying to untangle the maze that is toplevel configuration.  I need 
some advice as to desired behavior.

For the *host* m68k-apollo-bsd, currently
  host=build: sets BISON=yacc
  host!=build: sets BISON=bison

BISON represents a build-side tool, correct?  
So we should set BISON=yacc whenever this is the *build* machine, right?

For the *target* aix >= 4.3, currently
  host=build: sets AR_FOR_TARGET=ar -X32_64
              sets NM_FOR_TARGET=nm -B -X32_64
  host!=build: sets AR_FOR_TARGET=${target_alias}-ar
               sets NM_FOR_TARGET=${target_alias}-nm

This just doesn't seem right at all.  Under what circumstances do we 
want these flags?  It looks like they're always valid for GNU ar, GNU 
nm, AIX ar, and AIX nm; I'm guessing we want them even in the Canadian 
case.

I'm further guessing that we want ${target_alias}-ar whenever 
build!=target, with the flags added.

I can do this. :-)

For the *target* v810*, currently
  host=build: sets CC_FOR_TARGET=ca732 -ansi
              sets AS_FOR_TARGET=as732
              sets AR_FOR_TARGET=ar732
  host!=build: sets CC_FOR_TARGET = ${target_alias}-gcc
               sets AS_FOR_TARGET = ${target_alias}-as
               sets AR_FOR_TARGET = ${target_alias}-ar

This also looks wrong (very, very wrong), but I'm not sure what to do 
with it.  I'll hazard a guess that the '732' compilers should be used
when build=target=v810* and not otherwise?  But I could easily be wrong.

These three points are the next things holding up the top level 
autoconfiscation.  Hope to have them resolved soon.

--Nathanael