Sync blt 2.4z-6 (main) from Debian unstable (main)

[Logan Rosen]

Please sync blt 2.4z-6 (main) from Debian unstable (main)

Explanation of the Ubuntu delta and why it can be dropped:
  * Build using Tk 8.5 installed in a multiarch location.
  * Stop building for Tk 8.4. LP: #1155269.
The Tk changes were merged into Debian, so the delta is no longer necessary.

Changelog entries since current saucy version 2.4z-5ubuntu2:

blt (2.4z-6) unstable; urgency=low

  * QA upload, orphan the package.

  [ Paul E. Johnson ]
  * Fix zooming (Closes: #524149)
  * Fix crash in wish (Closes: #636629)
  * Version 2.4z-6 introduces quilt-3.0 patches.
  * Changes in control and rules file to silence lintian warnings.
  * 02-debian-all.diff includes all of the changes that were applied
    to the source code by previous packager. Almost all of the changes
    are corrections in spelling in the blt documentation and examples.
  * Apply 3 changes based on revisions developed by the fedora linux team.
    + 03-fedora-patch-2.diff
    + 04-fedora-tk8.5.6.patch.diff
    + 05-tk8.5-zoomstack.diff
   * Those patches are required to solve segmentation faults that are observed
    when blt is used with tcltk 8.5. We have a substantial amount of
    experience using this patched version of blt in the Swarm
    Simulation System (www.swarm.org) and have observed no ill-effects.
   * new patches for man page cleanups to silence lintian warningss.
   * patch configure according to Debian hardening policy.

  [ Georges Khaznadar ]
  * changed the source format to 3.0 (quilt)
  * modified every diff file in debian/patches to comply with the
    build tools
  * checked that the package is built successfully
  * modified Standards-Version -> 3.9.4, comptaibility level -> 9
  * added a build-depedency on quilt and ${misc:Depends} clauses
  * changed the build-depedency on debhelper (now: >= 9)
  * set the urgency flag to low (normal is not allowed)
  * removed the leading article in blt-dev's and blt-demo's description lines

  [ Matthias Klose ]
  * Allow to build using Tcl/Tk 8.5 installed in a multiarch location.
  * Stop building for Tk 8.4.
  * Allow parallel builds.

 -- Matthias Klose <email address hidden> Fri, 30 Aug 2013 11:13:17 +0200

[Dimitri John Ledkov (xnox)]

by now, this has already been synced