gas 2.10.91 from 20000920 cvs is broken under hpux 10.20

[Jeffrey A Law]

  In message < Pine.LNX.4.21.0009241113120.26851-100000@front.linuxcare.com.au >y
ou write:
 > You probably know more about the HP linker than I do.  I imagine that
  > removing an addil between a branch and its target is a fairly common
  > occurrence, so the HP linker should adjust the branch offset.
Yup -- it has to go back and fix all the pc-relative branches.  It also has
to change the instruction which used the result of the addil to reference
%r27 instead of %r1.

jeff