Obsolete hack for evbppc to replace memcmp(9), memcpy(9), and memmove(9)
with strictly-aligned versions.

Now all 32-bit powerpc ports share the same libc binary.

This change together with the preceding similar change in libkern slightly
improve performance for DHT (ibm4xx/405GP) and RB800 (MPC8533E).

See changes in bytebench scores:

- DHT https://gist.github.com/rokuyama/301063355de9733bea515b84ef574c0a
- RB800 https://gist.github.com/rokuyama/60ad665d367d6d110b79ec44707f39ff

Improvements may be negligible, but this does not cause performance
regressions at least.

This hack was for 403, but unaligned memory access is now emulated by
kernel. This should result in serious performance regression for 403.
We will provide strictly-aligned versions by ld.so.conf.

Improve previous:

- Add suffix ``d'' for mkdep(1).
- Improve comment a little...

For evbppc, use C version of bcopy(3), memcpy(3), memcmp(3), and
memmove(3) consistently for debug library (*.go) in order to avoid
alignment faults for 403.

update all of these makefiles for the .so -> .pico change.

most of them are most harmless, but the libgcc parts are quite essential.
before this change, all the special rules for .pico files were not applied,
and exception handling wasn't enabled. this caused c++ exceptions not to
work on sparc64.


this fixes the build of boost-headers (it was correctly calling exception
support broken!), which in turn makes all the things that depend upon it
to actually work again on sparc64.

Change NO_SRCS lines to specify .S in order to exclude the .c file from
SRCS but add it to LSRCS (sort of makes sense!).

bzero.S also defines memset(), so exclude memset.c

If SRCS contains any .S files then remove the corresponding .c file from
SRCS and add to LSRCS (for lint).
Change the 'string' Makefiles so that the arch/*/string/Makefile.inc
need only specify the .S files for that architecture and not the .c
files for all the files they don't override.

Remove references to index.c and rindex.c (strchr.c and strrchr.c
now provide the definitions).

branches: 1.8.10;
Fix a stupid typo in a comment. Pointed out by Juergen Hannken-Illjes.

Back out the ppc assembler changes for memcpy/memmove/memcmp on evbppc.
It breaks the explora because the cpu (403) cannot deal with unaligned
accesses. Reported by Juergen Hannken-Illjes.

Make use of ppc tuned assembler.

branches: 1.5.10; 1.5.16;
G/c KMSRCS and KMINCLUDES now that we have common/lib/libc

Add bzero.S and strlen.S to the stuff that gets installed in libkern.

Add assembler version of strlen.

Add PPC assembler routines for ffs(3), bzero(3) and memset(3).

branches: 1.1.14;
Architecture-specific bits for libc on the PowerPC. From Wolfgang
Solfrank <ws@tools.de>