add helpers for formula tests
show cmd being executed
use test helpers
aamath: add 0.3 bottle.
aardvark_shell_utils: add 1.0 bottle.
ack: add 2.12 bottle.
aha: add 0.4.7.2 bottle.
algol68g: add 2.8 bottle.
align: update 1.7.3 bottle.
ansifilter: update 1.8 bottle.
ascii: add 3.14 bottle.
ats2-postiats: update 0.1.0 bottle.
autopano-sift-c: add 2.5.1 bottle.
avian: add 0.7.1.1 bottle.
avra: add 1.3.0 bottle.
base64: add 1.5 bottle.
basex: add 7.9 bottle.
bash: add 4.3.18 bottle.
bgrep: add 0.2 bottle.
calc: add 2.12.4.8 bottle.