patch to fix i386 FreeBSD and NetBSD TARGET_DEFAULT

[Jeffrey A Law]

  In message < 19990323000017.B9203@cygnus.com >you write:
  > On Tue, Mar 23, 1999 at 12:21:54AM -0700, Jeffrey A Law wrote:
  > > TARGET_CPU_DEFAULT is supposed to used to set bits in TARGET_DEFAULT.
  > 
  > Where is this written?
  > 
  > > That's not how the x86 port is using it.  tsk tsk.
  > 
  > It certainly would be much less than convenient to do so.
  > Sparc is in the same boat.
I'm not sure if Kenner ever added documentation for it since it wasn't
really meant to be defined by developers, but by the configure process.  

There may be some tidbits about it in configure.in

jeff