Can you see if this patch fixes the rpath issues (it also changes the tolerance for the timer as well)?
The choice of 1% for the timer tolerance is arbitrary (it had worked for me on all the OS X 10.8 and 10.9 versions I tried as well as Linux). It is in the University of Houston's testsuite. I don't mind changing it to 3% to accommodate later OSX versions.
mac_test_fixes.patch (1.8 KB)