Backport fix for binutils 11867: .quad directive not assembled correctly.

Alan Modra (and Alan's employer) graciously permitted use of his patch
under GPLv2.

ok kettenis@

Don't reject '++' and '--' in expressions. Some versions of gcc emit these.
Fix found upstream.

ok miod@, martynas@

Backport fix of negative bignums from binutils 2.16:

2004-08-10 Mark Mitchell <mark@codesourcery.com>

* expr.c (operand): Handle the "~", "-", and "!" operators applied
to bignums

Backport fix of negative bignums from binutils 2.16:

2004-08-10 Mark Mitchell <mark@codesourcery.com>

* expr.c (operand): Handle the "~", "-", and "!" operators applied
to bignums.

http://sourceware.org/cgi-bin/cvsweb.cgi/src/gas/expr.c.diff?cvsroot=src&only\
_with_tag=MAIN&r2=1.52&r1=1.51&f=u

Fixes the problem mentioned here:

http://llvm.org/bugs/show_bug.cgi?id=6528

ok jsg@, miod@

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Merge conflicts, bringing our changes back in:
- extra $(SHELL) and sugar for make (so that files not mode +x still work)
- safer temp file handling
- our W^X binary layout changes in ld
- OpenBSD po

Merge conflicts, bringing our changes back in:
- extra $(SHELL) and sugar for make (so that files not mode +x still work)
- safer temp file handling
- our W^X binary layout changes in ld
- OpenBSD policy for library file selection in ld
- arm and m88k changes which were not merged in time for official 2.15
- bfd core file handling
- a couple typos

New for 2.15:
- ld(1) and as(1) manpages now generated at build time
- binutils/stabs.c reverted to use our in-tree libiberty for now
- we still use our VIA C3 crypto code over stock binutils, as it recognizes
more instructions
- new emulations for OpenBSD on mips64 machines, to help OpenBSD/sgi
- relaxed %f# handling in gas on OpenBSD/sparc64 (same as was in 2.14)

Tested on all platforms by various people; special thanks to sturm@ and
otto@.

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Resolve merge conflicts, adjust method of W^X handing (.sh files)
remove testsuites (not useable) remove mmalloc (not part of new binutils).

resolve conflicts.

Help stupid cvs fixing basic conflicts.

Merge to Cygnus 961112 + add some support (not ready) for shared libs

Merge the Cygnus 960904 sources

Import of binutils, gas, ld & gprof from Cygnus 960609 tree

Initial GNU binutils 2.6 import