Remove an incorrect comment.

ole32: The identity functions can be used from apartments other than the one the proxy was unmarshaled into.

In this case, don't use the cached This->remunk and don't cache the 
unmarshaled object in This->remunk.

Fix up the callers to release the returned IRemUnknown object.

Add tests for this behaviour.

Add tests to make sure read() and fread() work right on closed pipes.

msvcrt/tests: When compiling with Visual C++ 2005, one must define _CRT_NON_CONFORMING_SWPRINTFS otherwise swprintf() takes an extra parameter.