Log Message:

version -> 0.7.0

   Major changes:

   pkg_src_summary is now "distributed" tool, i.e. it can build
   src_summary using several processes or machines. 
      Examples:

      # for SMP machine
      env PSS_SLAVES=+5 pkg_src_summary ...

      # for machines in a network
      env PSS_SLAVES='host1 host2 host3' \
          PSS_PPERS=5 \
          PSS_TRANSPORT=/usr/bin/ssh pkg_src_summary ...

      PSS_PPERS variable sets a number of packages per slave that
      are built at once, defaults to 10.

   pkg_src_summary: PSS_FIELDS overrides the default
   list of generated fields

   pkg_update_src_summary: -i|--fields options specify a list of
   generated fields.