Improvements to path resolution in tlmgr and other scripts using kpathsea

[Norbert Preining]

Hi Daniel, hi Karl,

> At any rate, I don't think the changes will make any difference for native TL.
> Norbert, feel free to apply when ready, or I can. --thanks, karl.

Applied now. The changes in tlmgr/TLUtils will be in tlcritical for some
time until we push it out.

The change in tlshell should go out tomorrow, let us see if all goes
well.

Best

Norbert

--
PREINING Norbert                              https://www.preining.info
Fujitsu Research  +  IFMGA Guide  +  TU Wien  +  TeX Live  + Debian Dev
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