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vd
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svn:date
V 27
2017-06-07T08:43:26.240661Z
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V 251
databases/galera: Unbreak on powerpc64 by requesting a newer GCC

Also set PORTVERSION, PORTREVISION and GH_TAGNAME conditionally (?=),
so they can be overriden from the environment (to ease building custom
packages from arbitrary commits on github).

END