Add ssh username to ssh connection log message
Merge pull request #1633 from NeilW/add_ssh_username_to_log_message

Add ssh username to ssh connection log message
Warn if run list on Chef is empty, not error [GH-1620]
Improved SSH logging for connections
Built-in DestroyConfirm middleware
Handle box overrides in provider-specific overrides properly [GH-1617]
Error if a box override changes the box setting...
Compile the provider overrides early so config caching works
Improve the thread safety of BoxCollection
In a multi-machine environment, don't download box multiple [GH-1467]
Better locking within handle_box_url

This improves locking in the face of parallel providers and
handling box_url parameters. This avoids downloading a box multiple
times.
CHANGELOG
Fix default encrypted data bag secret
#1639 Better Solaris OS detection
Merge pull request #1640 from aszeszo/master

More robust Solaris detection
Update CHANGELOG for GH-1639
Attempt to read guest additions version from showvminfo [GH-1575]
Box add URL with windows drive letter works properly
Convert DOS line endings to Unix in shell provisioner [GH-1495]
Better message when using VirtualBox config