driven by new field in the project table called pcremote_ok, which is
the set of remote node types that a project is allowed to have
accounts on. When a node of that type checks in, match its type
against the project table, and return accounts for everyone in all of
the projects with that type listed in pcremote_ok.

Kill the NOSHAREDEXPTS ifdefs in doaccounts since that stuff is dead
for now.