patch to fix i386 FreeBSD and NetBSD TARGET_DEFAULT

[Jeffrey A Law]

  In message < 19990322161606.32691.qmail@quatramaran.ens.fr >you write:
  > when I sit down and wrote the openbsd port, I looked at TARGET_DEFAULT,
  > TARGET_CPU_DEFAULT, and put the current solution in
  > (a target_cpu_default="MASK_NO_FANCY_MATH_387").
  > 
  > Are you saying that I should reconsider and override TARGET_DEFAULT instead >  ?
  > What I did looked like a fairly good decision at the time... I followed the
  > same rationale that Jeff outlined basically.
Yea.  It looks like the x86 port's handling of TARGET_CPU_DEFAULT is
broken.  As a result the configure.in change isn't doing what we
want.

Anyway, I installed the FreeBSD & NetBSD changes from John.  I also
installed a suitable fix for OpenBSD.

jeff