Bug#1004341: mercurial-common: please add contrib/zsh_completion to d/copyright

[Daniel Shahaf <danielsh@apache.org>]

Package: mercurial-common
Version: 6.0.1-3
Severity: wishlist
Tags: newcomer

Dear Maintainer,

Please add contrib/zsh_completion's license (lines 19:34) to
debian/copyright.

Thanks,

Daniel

P.S.  I wasn't sure whether this is a wishlist bug (since the license
seems to be compatible with license in the «Files: *» section of
d/copyright) or an RC bug (a violation of the license or of Policy §2.3
point (1), as well as §4.5 and §12.5), so I'm filing this as wishlist and
Cc'ing -legal@ in case the severity should be bumped.