different more general fix for rethink getAll no args problem, plus reference to github issue.
different more general fix for rethink getAll no args problem, plus reference to github issue.

sagemathinc/smc,DrXyzzy/smc,DrXyzzy/smc,tscholl2/smc,DrXyzzy/smc,DrXyzzy/smc,sagemathinc/smc,tscholl2/smc,tscholl2/smc,tscholl2/smc,sagemathinc/smc,tscholl2/smc,sagemathinc/smc