When upgrading an environment, a sample configuration file is written besides the `trac.ini` in the `conf` folder.
When upgrading an environment, a sample configuration file is written
besides the `trac.ini` in the `conf` folder.

This makes it easier for Trac administrators to manually add 
the new configuration settings in the existing `trac.ini`.

It will be particularly useful for the 0.9 release, since
TracIni has evolved quite a bit since the 0.8 version ...


pkdevbox/trac,pkdevbox/trac,pkdevbox/trac,pkdevbox/trac