Icon dependencies

With the upcoming Icon Switching in OOo 2.0.2, we should be able to slim down 'images.zip', by splitting out the High Contrast (HC) icons, which now exist as a seperate theme. However, this has not been fully addressed as hardcoding remains for HC icons causing issues when they aren't present. I've been tracking these down by trial & error. Yesterday I caught a tricky one, involving 4 icons... much rejoicing after many hours of hacking. The result is a new release of my optimized images.zip (version 2, beta3), which fixes the problems I have encountered so far. Obviously it would be best if a developer trawls the source code for these dependencies, but I wouldn't have a clue where to start. For more information on these dependency issues see: i61432, i61498, i61500, i61634, i61804.