To apply all the patches locally, run:
./Xrv/apply_patches.py

To generate a new or updated patch, modify a file, then:
svn diff some_path/some_file > Xrv/NN_description.patch

On MS Windows, run:
Xrv/MAKE-INSTALLER.BAT
(just remember to run this on a clean tree so the patches can apply or the build will fail)
