Initial import from vim.org

Signed-off-by: René Köcher <shirk@bitspin.org>
Fixup owner.

Signed-off-by: René Köcher <shirk@bitspin.org>
pop{,b,w,l,q} opcode support

Thanks and credit for this goes to Hal Ashburner who supplied the patch.

Signed-off-by: René Köcher <shirk@bitspin.org>