Changelog:
===========
* Fix aborting when _GLIBCXX_ASSERTIONS are enabled.
* Fall back to utf8cpp header detection in the case that its CMake
configuration is removed.
* Improve compatibility with the SWIG interface compiler.
* Build system fixes for testing without bindings, Emscripten and Illumos.
* C bindings: Fix setting UTF-8 encoded property values.
* Windows: Fix opening long paths.
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>