[xacml] Agenda for Policy Model Subcommittee concall (Mon March 25)

1) Voting on the solutions of last concall (for which no  formal vote
   occurred given that there was no quorum)

2) evaluation of open issues of the PM subcommittee which are ready to be
   closed (Anne and Michiharu did a great job in collecting these
   already) and close them if there is agreement.

3) discussion on shifting to syntax subcommittee