New shiboken option to see the list of generated cxx files on a dry run

It would be nice having a way in shiboken (an additional option, maybe) to know which source files will be generated by a given run, with a given a set of options, without actually generating the files.

I use shiboken based bindings in a bigger projects which are built with SCons. Because of that I would like to create a reusable SCons extension (an SCons tool) to support Shiboken in a general way. Because shiboken generated files may change depending on the content of the C++ sources, or even on the PySide version (naming...), i would need such functionality to know on before hand which files are generated, for SCons to know about them so it can include them as intermediate dependencies.

Ideally that dry run should take less time than actually generating them but for my purposes a first unoptimized version would be ok to start with.

This bug comes from original PySide.org bug at: http://bugs.pyside.org/show_bug.cgi?id=1014