contrib/debian/control

debian: fix lintian warning about debhelper

It seems this is correct but does it work on older distros? I ran the
docker-jessie rule and didn't get any warnings.

Source: mercurial
Section: vcs
Priority: optional
Maintainer: Mercurial Developers <[e-mail]>
Build-Depends:
 debhelper (>= 9),
 dh-python,
 netbase,
 python-all,
 python-all-dev,
 python-docutils,
 zip,
 unzip
Standards-Version: 3.9.4
X-Python-Version: >= 2.6

Package: mercurial
Depends:
 python,
 ${shlibs:Depends},
 ${misc:Depends},
 ${python:Depends},
 mercurial-common (= ${source:Version})
Architecture: any
Description: fast, easy to use, distributed revision control tool.
 Mercurial is a fast, lightweight Source Control Management system designed
 for efficient handling of very large distributed projects.
 .
 Its features include:
  * O(1) delta-compressed file storage and retrieval scheme
  * Complete cross-indexing of files and changesets for efficient exploration
    of project history
  * Robust SHA1-based integrity checking and append-only storage model
  * Decentralized development model with arbitrary merging between trees
  * Easy-to-use command-line interface
  * Integrated stand-alone web interface
  * Small Python codebase

Package: mercurial-common
Architecture: all
Depends:
 ${misc:Depends},
 ${python:Depends},
Recommends: mercurial (= ${source:Version}), ca-certificates
Breaks: mercurial (<< ${source:Version})
Replaces: mercurial (<< 2.6.3)
Description: easy-to-use, scalable distributed version control system (common files)
 Mercurial is a fast, lightweight Source Control Management system designed
 for efficient handling of very large distributed projects.
 .
 This package contains the architecture independent components of Mercurial,
 and is generally useless without the mercurial package.