Athlon-SMP final

Hi Alan,

The polishing is done. Versus 2.4.1 again.

Summary:
struct task_struct{...} moved to a new file, linux/task_struct.h. struct sigpending{...} moved to a new file, linux/sigpending.h. remove line linux/capability.c:17 #include <linux/fs.h> (blessed by Andrew
Morgan)
adjust header inclusions in CONFIG_X386_USE_3DNOW section of
asm-i386/string.h.

Changes from the first version of the patch:
revert creation of linux/mm_struct.h (needless)
improve comments in the new files
remove #ifdef guards around dummy declarations (suggested by Manfred
Spraul)
remove dead version of kernel_cap_t support (also Manfred) remove redundant #include's (Niels Kristian Bech Jensen)

The new task_struct.h may be useful to others. If linux/sched.h is included just to permit dereference of some 'struct task_struct * tsk', linux/task_struct.h is a lightweight alternative.

Thanks again to Niels Kristian Bech Jensen, Andrew Morgan, and Manfred Spraul.

Cheers,
Tom

The Daemons lurk and are dumb. -- Emerson