[Pkg-openldap-devel] Bug#860774: relax dependency on libldap-common

[Ryan Tandy]

Package: libldap-2.4-2
Version: 2.4.44+dfsg-1

The tightly-versioned libldap-common dependency is causing frequent B-D 
uninstallability on the buildds and making extra work for porters having 
to re-bootstrap it.

e.g. the last upload failed on ppc64el, was given back, and immediately 
went BD-Uninstallable:

  openldap build-depends on:
  - heimdal-multidev:ppc64el
  heimdal-multidev depends on:
  - libhdb9-heimdal:ppc64el (= 7.1.0+dfsg-12)
  libhdb9-heimdal depends on:
  - libldap-2.4-2:ppc64el (>= 2.4.7)
  libldap-2.4-2 depends on missing:
  - libldap-common:ppc64el (= 2.4.44+dfsg-3)

For now the dependency could probably just be unversioned, as 
libldap-common's contents haven't changed since it was introduced.