Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Re-add the hand-optimised assembler versions of some of the ciphers
to the build.

Should have done this ages ago: markm
Reminded above to do this: peter

Pre-generate the optimized x86 crypto code and check it in rather than
depending on perl at build time. Makefile.asm is a helper for after the
next import.

With my cvs@ hat on, the relatively small repo cost of this is acceptable,
especially given that we have other (much bigger) things like
lib*.so.gz.uu checked in under src/lib/compat/*.

Reviewed by: kris (maintainer)