Make index/rindex weak aliases of strchr/strrchr since they are not
part of the ISO C standard and have also been dropped from POSIX.
OK guenther@ kettenis@

restructure libc/string + libc/arch/*/string coperation regarding
(potentially) MD versions (function dependent, not filename dependent)
split out memcpy/memmove/bcopy and strchr/index/strrchr/rindex

restructure libc/string + libc/arch/*/string coperation regarding
(potentially) MD versions (function dependent, not filename dependent)
split out memcpy/memmove/bcopy and strchr/index/strrchr/rindex
Bring back amd64 .S versions

And the final touch: switch all architectures temporarily to MI
memcpy.c, which contains syslog + abort for overlapping copies. A nice
harsh undefined behaviour. We will clean the entire userland of the
remaining issues in this catagory, then switch to the optimised memcpy
which skips the memmove check.

I tried to cut this change into pieces, but testing each sub-step on
every architecture is too time consuming and mindnumbing.
ok miod

show more ...

remove lint leftovers; ok guenther@

fix some lint 'xxx used, but not defined' warnings by properly adding
stuff to LSRCS

Preliminary userland bits for OpenBSD/landisk, many things coming from
NetBSD.