added: pkg_summary-utils(7) that describes what pkg_summary-utils
project is. All tools refer to it in its manual pages and
pkg_summary-utils(7) refers to manual pages of all tools.
pkg_src_summary:
a list of fields listed in -f|--fields option may be separated
by comma, not only space.
PSS_OPTIONS environment variable specifies default options to be
placed in front of any explicit options. See man page for the
sample.
-a and -r options added for adding and removing the specified
fields to/from the list of fields generated by default.
See man page for the samples.
pkg_update_src_summary:
a list of fields listed in -f|--fields option may be separated
by comma, not only space.
