Log Message:

version -> 0.14.1
FIX in pkg_src_summary: I forgot that grep's exit status may be 1 which is
    fatal if 'set -e'
pkg_cmp_summary:
    support for multi-variant package summaries.
    Option -m added for this.
pkg_grep_summary: in order to support summaries for multi-variant packages
    it is strongly recommented to use 'fvalue' variable in condition
    instead of '$2'. Man page and README update accordingly.