Here is a list of all files with brief descriptions:

ClientRequestDetails.cpp
ClientRequestDetails.h
ClientRequestDetails.inl
ClientRequestInfo.cpp
ClientRequestInfo.h
ClientRequestInfo.pidl	Pre-compiled ClientRequestInfo
ClientRequestInterceptor.pidl	Pre-compiled IDL source for the PortableInterceptor components in the ORB
ClientRequestInterceptor_Adapter_Impl.cpp
ClientRequestInterceptor_Adapter_Impl.h
ClientRequestInterceptor_Adapter_Impl.inl
ClientRequestInterceptor_Factory_Impl.cpp
ClientRequestInterceptor_Factory_Impl.h
DLL_Resident_ORB_Initializer.cpp
DLL_Resident_ORB_Initializer.h
Interceptor.pidl	Pre-compiled IDL source for the Interceptor components in the ORB
Interceptor_List_T.cpp
Interceptor_List_T.h
InvalidSlot.pidl	Pre-compiled InvalidSlot
ORBInitializer.pidl	ORBInitializer part of the PortableInterceptor part of the CORBA spec
ORBInitializer_Registry_Impl.cpp
ORBInitializer_Registry_Impl.h
ORBInitInfo.cpp
ORBInitInfo.h
ORBInitInfo.inl
ORBInitInfo.pidl	Pre-compiled IDL source for the ORBInitInfo
PI.cpp
PI.h
pi_export.h
PI_include.pidl	Include file for use in applications that need PI.pidl
PI_ORBInitializer.cpp
PI_ORBInitializer.h
PI_PolicyFactory.cpp
PI_PolicyFactory.h
PICurrent.cpp
PICurrent.h
PICurrent.inl
PICurrent.pidl	Pre-compiled IDL source for the PortableInterceptor components in the ORB
PICurrent_Impl.cpp
PICurrent_Impl.h
PICurrent_Impl.inl
PICurrent_Loader.cpp
PICurrent_Loader.h
PIForwardRequest.pidl	Pre-compiled IDL source for the PortableInterceptor components in the ORB
PolicyFactory.pidl	Pre-compiled IDL source for the PolicyFactory
PolicyFactory_Loader.cpp
PolicyFactory_Loader.h
PolicyFactory_Registry.cpp
PolicyFactory_Registry.h
PolicyFactoryA.cpp
PolicyFactoryA.h
PolicyFactoryC.cpp
PolicyFactoryC.h
PolicyFactoryS.h
ProcessingModePolicy.cpp
ProcessingModePolicy.h
ProcessingModePolicy.pidl	Pre-compiled IDL source for the ProcessingModePolicy within the PortableInterceptor module
RequestInfo.pidl	Pre-compiled RequestInfo
RequestInfo_Util.cpp
RequestInfo_Util.h
RequestInterceptor_Adapter_Impl.cpp
RequestInterceptor_Adapter_Impl.h