This is a follow on to dab64ff9be.

Change-Id: I01644f058030c0fac3f636871cc55a082edf51f1

Windows doesn't provide strcasecmp and I forgot to use the wrapper
function in 704453fa9c.

Change-Id: I291387d1f73328977fc9e0ba7c3b23eede9bc368

This reduces the delta for getting Android to compile and avoids having
Android carry around diffs to upstream versions of tcpdump.

Change-Id: I7f4cbb22b7a0f246bbebe960ca2139f0f42e14a0
Reviewed-on: https://boringssl-review.googlesource.com/1830
Reviewed-by: Adam Langley <agl@google.com>

This only applies to RC4, but it is still used by some Android code.

Change-Id: I4cf86269ffb7a230576da1bb2bfef7e1d4f234d6
Reviewed-on: https://boringssl-review.googlesource.com/1621
Reviewed-by: Adam Langley <agl@google.com>

PR#3272

(Imported from upstream's 14183e50e7 and
802fdcda1e)

Change-Id: Ied6183d938e320f953a18f6616890d88b74def3f

Initial fork from f2d678e6e8 (1.0.2 beta).

(This change contains substantial changes from the original and
effectively starts a new history.)