From R. Medrano Llamas:

Patch to add support for worker autodiscovery in PROOF using the Avahi/Bonjour
technology. The new functionality is supported on Mac (MacOsX >= 10.4; no need
of additional installs) and linux (requires the Avahi framework, available
by default on most of the distributions).
To use this functionality (instead-of or in-addition-to the the static worker
configuration via proof.conf or xpd.worker) the new directive 'xpd.bonjour'
must be used (see description at 
http://root.cern.ch/drupal/content/configuration-reference-guide#bonjour):
- masters should use it in 'discover' mode

       xpd.bonjour discover

- workers in 'register' mode, specifying how many cores or processes they
  accept for a session (default is the number of processors on the machine)

       xpd.bonjour register cores=4


git-svn-id: http://root.cern.ch/svn/root/trunk@36936 27541ba8-7e3a-0410-8455-c3a389f83636