License changed since licenses for the bundled linenoise and lz4 codebases
were added. We don't build either of them. Add MIT since utf8proc is MIT
licensed.
Configure to use the internal utf8proc codebase since we have no copy of that in
OE-Core, nor any need to add one.
Add a dependency on lz4 which is now required rather than using the internal
codebase within subversion.
Drop a patch merged upstream.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
