Use C source for openssl RC4 calculation instead of ASM

Due to a problem with rc4-x86_64.S,
We use the C rc4 source instead of the ASM source.
This hurts performance, but it's not a problem because
no production code uses openssl on x86-64.

BUG=240674
R=agl@chromium.org, digit@chromium.org, rsleevi@chromium.org, wtc@chromium.org
TBR=darin

Review URL: https://codereview.chromium.org/26651005

git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/openssl@229995 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
1 file changed