Bug#602249: [checks/scripts] check Pre-Depends for dpkg-maintscript-helper

[Colin Watson <cjwatson@debian.org>]

Package: lintian
Version: 2.4.3
Severity: wishlist

dpkg recently introduced the dpkg-maintscript-helper command.  Using
this in a maintainer script requires either that the script guard the
call with 'dpkg-maintscript-helper supports <command>', or that the
package Pre-Depends on dpkg (>= 1.15.7.2) for the rm_conffile and
mv_conffile commands, and presumably some later Pre-Depends for commands
yet to be added.

As discussed in #574443, it would be helpful if lintian could check
this.

Thanks,

-- 
Colin Watson                                       [cjwatson@debian.org]