Reintroduce handling of indistinguishable hypotheses in AutoProcess, polish code accordingly (was: Fix logic bug in AutoProcess)
In removeIndistinguishables, if two particles are indistinguishable, their lists of particles which they are allowed to be set to are made disjunct. This loses hypotheses and is hence not correct.
(from redmine: issue id 44, created on 2009-04-02)