Folks, i can not say with certainty now where I got "my" solution for the setjmp changes from at the time - be it a semi-official porting guide from the png project, an archived discussion on stackoverflow.com or whatever, but so far it appears to have worked for me. I would certainly appreciate if Debian could solve these internal policy issues in whatever way suits you without copying me on the discussion except where absolutely necessary, I am busy enough as it is.
Martin -- Dr. Martin Kroeker mar...@ruby.chemie.uni-freiburg.de c/o Prof.Dr. Caroline Roehr Institut fuer Anorganische und Analytische Chemie der Universitaet Freiburg