Update `render_getDirOutput.sh':
- Add `trunk/Manuals/Distro' directory to the list of directories
which add specific information to their paths. In this case the
distribution manuals add the release number.
NOTE: The architecture information isn't used by Distro manuals
so far, but it might be added in the future if needed (just as
it is done with the `Media' directory inside artistic motifs).