When building on BeeGFS the Formaline will output many warnings about unset variables used in a regex, when using CACTUS_CONFIGS_DIR. This only happens on BeeGFS which does not support cross directory hardlinks.

Pull request https://bitbucket.org/cactuscode/cactusutils/pull-requests/41 fixes this.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2704/unitialized-variable-use-in-formaline