Shared transport: 'members' variable incorrect (remove from TP ?)

TP.members is the union of all views received on all channels. This is incorrect, and sendToAllMembers() iterating over 'members' would unnecessarily send messages to members in a different cluster ! (these would get dropped, but it is still spurious traffic)

Logically, 'members' belongs to a cluster, so maybe we ahould should have a table of cluster names and views in TP ?