Layer to selection (select layer bounds)

Adds a new menu item

Select→Layer to selection

which creates a selection that exactly matches the boundaries of the current layer.

2012-08-08: Added the fixes by Aralox thanks :-)

See also http://flashingtwelve.brickfilms.com/GIMP/Scripts/layer-select.scm by saulgoode.

Newest version always at https://github.com/unhammer/gimp-fu