Pick commits from https://github.com/libexpat/libexpat/pull/915
Not picking test is suboptimal, but test structure was changed meanwhile
so we'd have to invent new code.
Skipping tests was already done in previous expat/kirkstone CVE patches.
(From OE-Core rev: 2cf8325876aa4d43151f5a327a21834db37bf0cb)
Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>