Squashed 'Modules/Core/' changes from 1f638cf..bf0bbd2

bf0bbd2 Setting the environment variable as mutable during installation

git-subtree-dir: Modules/Core
git-subtree-split: bf0bbd2e314d9d4bda36d36e8afc39e011368098
Merge commit '2bfdae8a48f80e69ac6fe13cc7bcff79d7d9040d'

* commit '2bfdae8a48f80e69ac6fe13cc7bcff79d7d9040d':
  Squashed 'Modules/Core/' changes from 1f638cf..bf0bbd2