by default launched before the C++ generating visitors,
in order to add CCM equivalent IDL to the AST. There is a new tool in CIAO
which converts IDL files by replacing IDL3 constructs with equivalent IDL2
constructs, and if the IDL compiler is run on these files, we do not want
the CCM preprocessing to occur.
</li>

<li>
Changed the behavior of the -o option to create the specified directory
if it does not already exist. Only one level of directory can be created
with this option (any path prefix included 