CPP13 — portable includes

Summary: We all know that the names of the C++ #include files generated from IDL are
not standardized, and are thus the one remaining major source portability
issue. One way to fix this would be to agree on some standard filenames,
but we"ve tried this before and have never succeeded.

Just thinking out loud here, but another way to fix it would be to agree on
some standard macro names that applications could use to portably include
the appropriate files. For example, define one macro for a client-side
include and one macro for a server-side include, both taking the basename
of the IDL file as an argument:

#ifndef CORBA_CXX_CLIENT_INCLUDE
#define CORBA_CXX_CLIENT_INCLUDE(base) <base ## Client.hh>
#endif

#ifndef CORBA_CXX_SERVER_INCLUDE
#define CORBA_CXX_SERVER_INCLUDE(base) <base ## Server.hh>
#endif

Obviously, the exact definition of the macro would depend on the names of
the generated files.

I believe these could then be used portably in the client and server source
code like this:

#include CORBA_CXX_CLIENT_INCLUDE(file)

With this approach, nobody has to change the names of the files they
currently generate.