Log Message:

version -> 0.4.2

   pkg_src_fetch_var:
      - read PKGPATHs instead of Makefile filenames.
        In order to Makefiles from PKGPATH, PKGSRCDIR environment
        variable is used (/usr/pkgsrc by default).
      - TAB character is used as a fields separator instead of SPC

   pkg_micro_src_summary:
      - added options: -h|--help|-f|--fields
        -f|--fields is for specifying fields to be included
        to the summary, PKGNAME and PKGPATH by default