libarchive: backport rc4 crypto requirement update
Backport upstream libarchive commit 70f497f456 (As per Cryptographic
Requirements, 2017-03-19). Discard more bytes of the RC4 keystream
to reduce the possibility of non-random bytes.
Backport upstream libarchive commit 70f497f456 (As per Cryptographic
Requirements, 2017-03-19). Discard more bytes of the RC4 keystream
to reduce the possibility of non-random bytes.