title: Don't add "+" to linux kernel version
body: <p>I am building linux kernel, if my kernel under git, then kernel version every time is:</p>
  
  <pre><code>Image Name:   Linux-2.6.39+
  </code></pre>
  
  <p>If I am not using git, then everything is OK without any plus at the end.</p>
  
  <p>I know that this done by scripts/setlocalversion script:</p>
  
  <pre><code>if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
      # full scm version string
      res="$res$(scm_version)"
  else
      # append a plus sign if the repository is not in a clean
      # annotated or signed tagged state (as git describe only
      # looks at signed or annotated tags - git tag -a/-s) and
      # LOCALVERSION= is not specified
      if test "${LOCALVERSION+set}" != "set"; then
          scm=$(scm_version --short)
              res="$res${scm:++}"
          fi
  fi
  </code></pre>
  
  <p>So, it is possible without code changes say to build system that no need to add "+" at the end of version line?</p>