[omniORB] Patches for AIX XLC 5.0

[Sandro Tolaini]

> Please can you try the current CVS version?  We're on the verge of
> doing an omniORB 3.0.3 release, and it would be nice to have AIX
> working. I think I've done all the right things...

It would be nice if you fix also the FreeBSD port. The only thing you have
to fix is:

src/tool/omniidl/cxx/idlutil.cc (line 160): use "strtouq" instead of
"strtoull" (same parameters).

Obviously, you'll have to #ifdef __freebsd__ it.

Cheers,
  Sandro Tolaini