Description of problem: Both libxul.pc and libxul-embedding.pc define the idldir. The problem is, that the paths are different and the one defined by libxul-embedding.pc is wrong - it lacks stable subdirectory. Version-Release number of selected component (if applicable): xulrunner-1.9-0.beta2.13.nightly20080121.fc9
Added to CVS, will be in xulrunner-1.9-0.beta2.15 or latter. Thanks.