* Merge from Debian unstable. Remaining changes: - Bug Fix: If linux-headers are not installed, don't block, and print information for the user. - added debian/dahdi.postinst - added --error-handler=init_failed to debian/rules - debian/control: Added gawk as dependency for dkms build (LP: #493304) - Changes from Debian: - debian/control: Change Maintainer - debian/control: Removed Uploaders field. - debian/control: Removed Debian Vcs-Svn entry and replaced with ubuntu-voip Vcs-Bzr, to reflect divergence in packages. - debian/control: Package dahdi Depends on dahdi-dkms | dahdi-source