Revert ill-starred change of 13-Feb-02: it appeared to fix a problem of

Revert ill-starred change of 13-Feb-02: it appeared to fix a problem of
incorrect permissions checking, but in fact disabled most all permissions
checks for view updates.  This corrects problems reported by Sergey
Yatskevich among others, at the cost of re-introducing the problem
previously reported by Tim Burgess.  However, since we'd lived with that
problem for quite awhile without knowing it, we can live with it awhile
longer until a proper fix can be made in 7.5.