Log Message:
Update nut to 13.2.  Should close PR 34466.

Pkgsrc changes:
    Add DESTDIR support.

Recent changes (cannot available changes from 10.18 to 12.6 anymore).
13.2:
This release makes minor changes to the analysis reset and food suggestion
functions.
13.1:
This release changes some fatty acid defaults to allow more saturated fat when
eating low-carb, and to raise the maximum amount of long-chain Omega-3.
13.0:
This release introduces the new USDA Nutrient Database SR20 and allows current
NUT installations to have their existing meal records reinterpreted with the new
database.
12.7:
This release uses a new food name abbreviation algorithm so that food names are
more informative and less cryptic.