simplification of section offsets handling

[Stan Shebs]

   From: fnf@www.ninemoons.com
   Date: Sun, 29 Aug 1999 13:32:19 -0700 (MST)

   This patch continues the work started in an early change, which
   simplifies section offset handling by avoiding passing both a
   pointer to the section offsets and the objfile pointer, which
   also points to the same section offsets.

Jim Blandy is normally the maintainer for symbol stuff, but while's
he's off hacking Guile in Japan I'll pretend to be him and approve
these for checkin at your leisure.  Thanks for simplifying this,
everybody's future work will be easier because of this kind of
improvement!

								Stan