automatically set correct python folder on Windows

[Luke1410]

The files trac-admin(.py), trac.cgi and trac.fcgi need the absolute path for the python.exe as their first line to properly find and run the scripts.

Currently the user has to change it manually, even when using the installer.

It would be a nice feature if the installer could set the python path properly, so trac, once correctly set up, will work without any other user interaction even after upgrading to a new version.

[Emmanuel Blot]

This is likely to be a windows-only issue, as the scripts use the following she-bang line:

#!/usr/bin/env python

which gives the proper path to the Python interpreter on all environments (but Windows?)

[Noah Kantrowitz]

This is already fixed in trunk, which uses setuptools' script generation facility to build the wrapper .exes.

[Christian Boos]

(clearing report:35)