Fixes #5231: Using digest to copy ncf promises to really enforce copying changes
Merge pull request #439 from ncharles/bug_5231/dev/enforce_copy_of_ncf_promises

Fixes #5231: Using digest to copy ncf promises to really enforce copying...
Merge branch 'branches/rudder/2.10' into branches/rudder/2.11
Merge branch 'branches/rudder/2.11'