Copy only a single copy of each path
Copy only a single copy of each path

Bug: https://github.com/gwicke/mathoid/issues/5
Change-Id: I96e529aed515bbe7ccff69347730ff3cfe958a36

wikimedia/mathoid,kwangkim/mathoid,physikerwelt/mediawiki-services-mathoid,wikimedia/mathoid,MonashAlexandria/mathoid,kwangkim/mathoid,kwangkim/mathoid,wikimedia/mathoid,physikerwelt/mathoid-server,kwangkim/mathoid,MonashAlexandria/mathoid,physikerwelt/mathoid-server,wikimedia/mathoid,physikerwelt/mathoid-server