configure.ac: remove -dev in version

* configure.ac: Remove the -dev suffix from the version, some package
  systems at least do not like non-numeric strings in package versions
  (e.g., rpm, which I often use in testing Quagga).

  TODO: Work out some sensible scheme for semi-autogenerating the version
  perhaps via git describe. The --with-pkg-git-version doesn't affect the
  tarball name.
1 file changed