PATCH: PowerMac specific

Hi all,

the attached patches are necessary to get the kernel 2.3.99-pre8
compiled for PowerMacs, when some configuration options are different
than others seem to have them (CONFIG_ADBMOUSE, CONFIG_ADB_PMU, CONFIG_KGDB).

Also we've got some renamed defines in ide-pmac.c (Mediabay-specific).

And some undeclared symbols in include/asm-ppc/string.h.

Regards,
- Bernd