When WordPress is loaded in a function (e.g. unit tests) the variables initialized at the top level aren't globals, but we expect them to be. Explicitly make the version variables global.

Props nbachiyski.
Fixes #23685.


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Don't globalize version variables twice. See #23685.


Built from https://develop.svn.wordpress.org/trunk@26009


git-svn-id: http://core.svn.wordpress.org/trunk@25940 1a063a9b-81f0-0310-95a4-ce76da25c4cd