to do:

remove DONTDEF

fix relocation types for i860, perhaps by adding a ref pointer to
	fixS?

fucked up on a.out.gnu.h, etc.
remove the ifdef's from fx_callj tests?
what are callj tests?
space tighten sparc alignment.
convert md_ri_to_chars to emit fixP's.
fix number_to_chars, & family to have no side effects.
md_ => tp_
use CROSS_ASSEMBLE
multiple segments.
share b.out with a.out.

regress:

+-inf

stack:
