[omniNotify] A standard C++ bug found in omniNotify

[Luo Yongheng]

I noticed that some source files include <iostream.h>. This can not be 
compiled by standard C++ compatable compiler. I tried to compile omniNotify 
with VC8, but failed with 'can not locate iostream.h' errors.

I think we should change it to "#include <iostream>" or add a 'HAVE_STD' 
definition like omniORB does.

Best Regards
Thierry from Beijing China