new port: www/linklint - Perl script that checks links on web sites

Linklint is a perl script that checks links on web sites.

Features:

  * both local-file and HTTP site checking
  * cross referenced and fully hyperlinked output reports
  * the ability to check password protected areas
  * support for all standard server-side image maps
  * reports of orphan files, and files with mismatching case
  * a report of which URLs have changed since last checked
  * support of proxy servers for remote URL checking

You can use it for instance for a link survey:

 $ make -C /usr/ports search www=. \
        | sed -n -E 's/^WWW:[[:space:]]*(http|https|ftp)/\1/p' \
        | while read url; do perl -e 'print "=" x80;'; linklint $url; done