There is an issue with custom icons on directories in the 2.5c2 installer,
don't set a custom icon on "/Applications/MacPython 2.5" for now.
Also make sure that the installer doesn't crap out when the Makefile in the
system's python installation has other customizations than we expect.
the MACOSX_DEPLOYMENT_TARGET environment variable to 10.3 when calling the
loader. And we do this with "env" because distutils apparently doesn't
understand environment variable assignments before command names.
needs to run it in the Makefile).
After installing a newer framework Python the apple-installed Python can
no longer build extension modules, because they will inadvertantly be linked
against the newer framework. This script modifies lib/config/Makefile so
it will link extensions with "-undefined dynamic_lookup", which forestalls
this problem.
Will backport to 2.4 and 2.3.