whatmask: use == in test
unac: needs newer autotools
unac: improve test
jshon: improve test
t1utils: fix test
git-tracker: improve test
iozone: fix test
enscript: improve test
sflowtool: improve test
justniffer: improve test
mp3fs: improve test
libvbucket: improve test
newick-utils: improve test
aamath: improve test
gptfdisk: improve test
mosquitto: improve test
gtk-engines: fix test
yle-dl: 2.0.2 - download stuff from areena.yle.fi

Closes #18719.

Signed-off-by: Samuel John <github@SamuelJohn.de>
doctor: check for all DYLD env vars