icu: update to 59.1
License checksum change due to copyright year update.
Latest icu will not compile with anything less than C++11, so
drop the enforcement of an earlier C++ version. This should be okay,
as there is now a fix in place for the problem of mixing native gcc 4/5
compiled code:
http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=
c21cec84886d9c70396e9be0ceb9a8ef300b54be
Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
