[packages] babeld: new upstream release 1.3.1

[packages] babeld: new upstream release 1.3.1

11 February 2011: babeld-1.3.1
  * Made the resend logic less aggressive.  This should lead to fewer request
    messages upon link failure, at the cost of somewhat worse behaviour in the
    presence of heavy packet loss.
  * INCOMPATIBLE CHANGE: removed the idle detection functionality (-i).  This
    feature was little used and complicated the code somewhat.
  * Various internal tweaks to bring babeld closer to the Quagga version.

git-svn-id: svn://svn.openwrt.org/openwrt/packages@30451 3c298f89-4303-0410-b956-a3cf2f4a3e73