guests/linux: rsync chown if either user or group incorrect [GH-3485]
Merge pull request #3486 from benesch/fix-rsync-owner-group-linux

guests/linux: rsync chown if either user or group incorrect [GH-3485]
Update CHANGELOG
core: remove temp file when done with box
providers/hyperv: provision action [GH-3494]
Update CHANGELOG
Small fix to hyper-v provision action
Merge pull request #3497 from jingchan/master

providers/hyperv: Small fix to hyper-v provision action
commands/box/list: doesn't trigger Vagrantfile loading
command/rsync-auto: proper require
provisioners/salt: error if minion_config missing
website/www: feature preview windows guests
Merge pull request #3506 from rasschaert/master

provisioner/salt: better error if master config missing
Update CHANGELOG
v1.5.4
synced_folders/rsync: only chown when necessary [GH-3525]

Run remote rsync as root to guarantee that rsync can write to guestpath.
This obviates the need to chown the guestpath to the SSH user prior to
sync.

This brings a substantial speedup (2x on a moderately-sized shared
folder) and properly triggers filesystem notifications on only the files
changed by a given sync.