[Merge] ~mitya57/compiz:s390x-test into compiz:master

[Dmitry Shachnev]

> So I am now almost sure that it's a compiler regression.

In fact it was a bug in Compiz. One should use a long/unsigned long variable for getting/setting 32-bit properties. uint32_t is not enough.

Thanks to Jakub Jelinek for pointing me to it in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96594#c3.

The latest commit should fix the issue properly. It built fine on s390x in https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/4202/+packages.
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https://code.launchpad.net/~mitya57/compiz/+git/compiz/+merge/389101
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