fixed string handling and added debug warning messages in cupsfilters/colormanager
added handling of color rendering intent in rastertopdf
modified cmGetPrinterIccProfile() to accept PPDs optionally; replaced select foomaticrip color management code with calls to cupsfilters/colormanager
pdftoraster: fixed handling of cupsColorSpaces 18,19,20; some code cleanup
colormanager.c: Fixed Adobe RGB matrix for proper rendering (transpose)