Update to 1.17. The pwhich utility was separated from the File::Which
module during the intervening versions, so remove references to it from
pkg-descr. p5-Test-Script is no longer required for running the tests, so
remove it.

Also, adjust COMMENT so that it doesn't contain a backtick, which makes
me kindof nervous. Add in LICENSE for good measure.

Transfer maintainership to the perl@ collective, at maintainer's request.
Thanks to demon for maintaining this port for so long.

PR: 199840
Approved by: demon (outgoing maintainer)