Removed redundant $Id: in file
Added missing RCSid forgotten during initial check-in
Double-counting bugfix for glow sources (thanks DGM!), revised copyright
Fixes for Windows and photon map
This form allows you to request diffs between any two revisions of this file. For each of the two "sides" of the diff, select a symbolic revision name using the selection box, or choose 'Use Text Field' and enter a numeric revision.