Squashed 'dependencies/lmdb/' changes from 8d0cbbc93..2fd44e325
Squashed 'dependencies/lmdb/' changes from 8d0cbbc93..2fd44e325

2fd44e325 ITS#9278 fix robust mutex cleanup for FreeBSD

git-subtree-dir: dependencies/lmdb
git-subtree-split: 2fd44e325195ae81664eb5dc36e7d265927c5ebc

Venemo/node-lmdb,Venemo/node-lmdb,Venemo/node-lmdb