COMP: use proper variable evaluation in SlicerExtensionCPack
Should fix UKFTractography extension packaging due to using incorrect fixup script. Has been broken since 195c0d55.
See build error: http://slicer.cdash.org/buildSummary.php?buildid=875941
Should fix UKFTractography extension packaging due to using incorrect fixup script. Has been broken since 195c0d55.
See build error: http://slicer.cdash.org/buildSummary.php?buildid=875941