Squashed 'wicker/' changes from 301550b..f3ad9ca

f3ad9ca better error checking on road structure building

git-subtree-dir: wicker
git-subtree-split: f3ad9ca6ac874b5597780a446a1b5d66ff886c81
(wicker) Better road structure building error checking.
Squashed 'wicker/' changes from f3ad9ca..b58cbb1

b58cbb1 fixed typo

git-subtree-dir: wicker
git-subtree-split: b58cbb1755e69dcd45d2ced56cb3e7f276d41f28
(YAWBF) typo
StopPrecip fix