2004-09-01 Sebastien Pouliot <sebastien@ximian.com>

2004-09-01  Sebastien Pouliot  <sebastien@ximian.com>

	* NamedPermissionSet.cs: FromXml now calls base class instead of an
	internal method of PermissionSet. This should allow class to inherit
	from NamedPermissionSet properly.
	* PermissionSet.cs: Added an internal PolicyLevel property to allow
	policy file class name resolution. Fixed IsEmpty to return true if
	the list contains "empty" permissions. Fixed Copy to copy permissions
	even for unrestricted sets (again because of IUnrestrictedPermission).
	* SecurityManager.cs: Fixed Resolve(Evidence) because permission
	classes	Intersect methods can either return null or an empty
	PermissionSet.  Fixed ResolvePolicy(Evidence[]) for null (NET_2_0).

svn path=/trunk/mcs/; revision=33151