Silence gcc-3.0 multiline string warnings for PPC

[Geoff Keating]

> From: Franz Sirl <Franz.Sirl-kernel@lauterbach.com>
> Date: Mon, 2 Apr 2001 10:26:49 +0200

> 	* sysdeps/powerpc/atomicity.h: Silence warnings.
> 	* sysdeps/powerpc/dl-machine.h: Likewise.
> 	* sysdeps/powerpc/register-dump.h: Likewise.
> 	* sysdeps/powerpc/fpu/s_lrint.c: Likewise.

This is OK, although terribly ugly.  Please commit it.

-- 
- Geoffrey Keating <geoffk@geoffk.org>