Lossless optimization of png image files, using `pngslim` and other tools.
Program graphics (compiled or included with software):
- Slimmed 526 KiB (~485 KiB kpacked), average ~39% saving for 20 files.
Source artwork material (not included in a distribution):
- Slimmed 433 B (~425 B kpacked), ~15% saving for 1 file.
Old vestigial images (may no longer be used):
- Slimmed 41.9 KiB (~16.9 KiB kpacked), average ~45% saving for 8 files.
git-svn-id: svn://kolibrios.org@10029 a494cfbc-eb01-0410-851d-a64ba20cac60
