[update 1.2] #12250

12250
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Issue 3270: fix xor: to work with blocks and booleans
Issue 3277: [FIX] Replace #& in Socket with #and: to save #isConnected send
Issue 3180: Failing Tests SUnit
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Marcus Denker  -- http://www.marcusdenker.de
INRIA Lille -- Nord Europe. Team RMoD.