Spacing layers evenly

Small python script to space layers evenly (equal intervals between layers) within the selection bounds (or the image bounds when there is no selection).

Before:

After (with inner spacing only):

After (with outer spacing):

space-evenly can be downloaded there: http://sourceforge.net/projects/gimp-tools/files/scripts/

and the doc is here: http://gimp-tools.sourceforge.net/tools.shtml