games/pysolfc: Update to 2.6.3

While I'm here:

• Fix the symlink for "pysol01.png" by changing it from absolute to relative because source and target are both inside of ${PREFIX}.
• Update the WWW entry to save uneccessary redirects from HTTP to HTTPS.

Changelog since 2.4.0:

• Compatibility with Pillow 6.x
• Restore the "Save games geometry" feature
• Added a NEWS.asciidoc file
• Forbid illegal moves in Spider and some other variants
• Support for solving Golf using a solver
• Fixed a bug with cards that couldn't be moved or selected
• Ability to run the test suite without Python 2.x and/or pygtk
• Code cleanups

https://github.com/shlomif/PySolFC/blob/pysolfc-2.6.3/NEWS.asciidoc

Approved by: mentors (implicit)