Committed, Fix part of PR target/19065; an autoincrement-free mem constraint for CRIS.

[Hans-Peter Nilsson]

> Date: Mon, 28 Feb 2005 03:24:23 +0100
> From: Hans-Peter Nilsson <hp@axis.com>

> Mark, I'd really really want this on the 4.0 branch too.

Since Mark deferred to my judgement and I judge the lack of a
"safe" constraint for use in atomicity asms serious enough, I
committed this and the atomicity.h patch to 4.0 too, with one
change:

> 	("cmphi"): Ditto.  Add separate alternative for operand 0 "Q>",
> 	operand 1: "M".

Corrected to: 'operand 0 "r",' main trunk too.

brgds, H-P