Adjust rpaths on installed binaries:
a) Update absolute paths left from binary cache and/or build tree b) Add corresponding relative paths (unless already present) to allow moving installation
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This is the new version of !78 (closed) , primary goal is to allow kioslaves to run, correctly, inside AppImages. See latest comment, there, for a discussion, why, and how rpaths are not always correct, so far.
Not sure, whether the part about installing patchelf during bootstrapping is correct.
Edited by Thomas Friedrichsmeier