elf32-hppa: abort rather than BFD_ASSERT

[amodra@one.net.au]

On Thu, May 24, 2001 at 08:33:56PM -0700, H . J . Lu wrote:
> 
> Why not give some useful messaages? I have been doing that for new
> tests I added.

Well, the asserts (now aborts) shouldn't ever happen :-)  They indicate
some sort of internal bfd error.  Note that "abort" is #defined to
_bfd_abort, which spits out file, line and function info, so we haven't
lost any information compared to the BFD_ASSERT code.

Alan