Log Message:

Version -> 0.51.0

  pkg_digger_backend:
     - More fields to search in: PKGBASE, PKGPATHe, PKGPABA, PKGPANA
       and PKGPAIR

  pkg_digger:
     - New short synonyms for fields:
        - C - CATEGORIES
        - b - PKGBASE
     - New defaults in pkg_digger.conf.
       pkg_digger_field__empty has changed from "COMMENTS" to \ 
"PKGBASE"
       pkg_digger_strat__empty is assigned to "exact"
       Thus ::<query> matches exact PKGBASE, e.g.
       'pkg_digger ::emacs' will search for PKGBASE equal to 'emacs'.
     - Option -r without -3|-9 doesn't fail anymore

  pkg_summary2deps:
     - TNF provides summaries that contain packages wthout PKGPATH
       (netbsd-compat50-5.1).  So, absense of PKGPATH is not a fatal
       error in pkg_summary2deps anymore.

  Minor improvements