[hardening-discuss] Bug#837938: move the hardening-check script from hardening-includes to devscripts

[Matthias Klose]

Package: hardening-includes,devscripts
Severity: important

As discussed in #836162, the hardening-check script from hardening-includes
should be shipped by the devscripts package with proper Breaks/Replaces.

hardening-includes is currently not installable, therefore the important severity.