NOTE: The scrapper was previously included, but due to the website it scrapped
being dead it's no longer useful. See #3642 for the code.
Co-authored-by: Marc Cornellà <marc.cornella@live.com>
Gives a better error message than "command not found: strfile", because
it's not obvious to many users that strfile is part of fortune.
Also handles the weird /usr/sbin install location for strfile on Cygwin.