Debian AMD64, Linux 2.6.8, gcc 4.0.3, ipv6 enabled.

The Param_Test is failing when I passed "-ORBUseSharedProfile 1" to the server
cmd line. Here are the steps to repeat it:

------8<-------
$cd $TAO_ROOT/tests/Param_Test
$./server -ORBUseSharedProfile 1 -o server.ior&
$./client  -f server.ior  -i sii -t objref -n 5 -x
Nil object references returned
(client.cpp:134) client.cpp - run_sii_test: Invalid results in iteration 0
Nil object references returned
(client.cpp:134) client.cpp - run_sii_test: Invalid results in iteration 1
Nil object references returned
(client.cpp:134) client.cpp - run_sii_test: Invalid results in iteration 2
Nil object references returned
(client.cpp:134) client.cpp - run_sii_test: Invalid results in iteration 3
Nil object references returned
(client.cpp:134) client.cpp - run_sii_test: Invalid results in iteration 4
        ERROR 5 faults in 5 calls
*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
********** Error running test_objref SII *********
(driver.cpp:48) driver.cpp - tests failed
------8<-------

The above errors are due to the line 719 in the param_test_i.cpp:

CORBA::Boolean equiv = myobj->_is_equivalent (o1
                                                    ACE_ENV_ARG_PARAMETER);

myobj and o1 is not equivalent. The reason is as follows.

If -ORBUseSharedProfile 1 is set, then multiple endpoints are composed in one
profile. When the equivalency of the two profiles is tested, it compared each
endpoint in the two profiles. The problem came up when ipv6 is enabled.
Basically, it is the sin6_scope_id, e.g., %2 in the ipv6 link-local address that
screwed up things. The endpoint in myobj has this "%2" showing in the ipv6 addr,
but o1 does not. That's why the equivalency test has failed to pass. 

I noted in encode_endpoints() function, it takes out the sin6_scope_id. However
when we use _this() to create the object reference, the sin6_scope_id is still
there. 

There are at least two possible solutions to fix this:

1.) change the TAO_IIOP_Endpoint::is_equivalent(). In case of ipv6, don't ignore
the sin6_scope_id part of the test.

2.) change TAO_IIOP_Acceptor::create_shared_profile(). When creating the
profile, strip the sin6_scope_id from the hostname. 

Comments?