py2exe uses Python's modulefinder to find the modules
and packages that belong to one or more scripts.

For not too small projects, the runtime of modulefinder
is quite long.  On my system, the time to find all 533
modules my project needs is around 48 seconds.

So, I profiled the Python 2.4 modulefinder, and patched
it for a speedup of a factor of ~2.5 - the time
required to find the modules drops to around 19 seconds.