astro/wmsun: update to 1.06

Changelog: https://repo.or.cz/dockapps.git/blob_plain/HEAD:/wmsun/ChangeLog

Major changes:
  * Fix typo in manpage.
  * Move version number definition to Makefile
  * Add 'dist' target to Makefile to generate tarball

Port changes:
  * reformat Makefile to make portfmt happy
  * update WWW (error 404)