scheme-basic provides hyperref but lacks new etoolbox dependency

[Karl Berry]

    I guess etoolbox should be moved from collection-latexrecommended to 
    collection-latex?

I guess so too. Done. Thanks much for the report.

    FWIW, 11 years ago, a similar dependency issue came 
    up here <https://tug.org/pipermail/tex-live/2014-February/034923.html>

If only all our bugs took 11 years to recur :) :(. --thanks, karl.