Bug 1315

The following change:

Tue Aug 27 15:48:17 2002  Irfan Pyarali  <irfan@oomworks.com>

        Thanks to Christian Klutz <cklutz@gmx.net> for reporting the bug
	that resulted in the following changes.

	* tao/PortableServer/PortableServer_PolicyFactory.cpp: New class
	  for creating POA Policies.

	* tao/PortableServer/PortableServer_ORBInitializer.cpp:  New
	  initialization class that adds TAO_PortableServer_PolicyFactory
	  as a factory for POA Policies.

	* tao/PortableServer/PortableServer.cpp (init): Registered
	  TAO_PortableServer_ORBInitializer with the PortableInterceptor.
        ...

Breaks the DLL ORB functionality whenever the POA's static constructor is used.
   The problem stems from the fact that the static constructor defined in
tao/PortableServer/PortableServer.cpp calls
PortableInterceptor::register_orb_initializer().  That call forces
TAO_Singleton_Manager to be default initialized since the ORBInitializer
table/registry is a Singleton.  Default initializing the TAO_Singleton_Manager
causes it to be registered with the ACE_Object_Manager.  Doing so prevents TAO
from being dynamically unloaded safely since the ACE_Object_Manager will have a
dangling reference to a non-existent TAO_Singleton_Manager.

This problem is evident in the TAO/tests/DLL_ORB test.