So maybe it's something with this wrapper-script, and the binary
kpsewhich(when its needed libs and itself is installed) has no problem.
I think I fixed this in r58227, by adding the binary name used under the
wrapper to the test texmf.cnf.
+++ tests/cnfline/texmf.cnf (working copy)
..
+maxpr.lt-kpsewhich=200