mail/popular: Prepare for textproc/p5-XML-Parser update

Also:

• Bump PORTREVISION
• Skip build of man pages, which are already present in the distribution
• Add LICENSE
• Add USE_LDCONFIG
• Regenerate patches to follow the standard
• Pass maintainership to the submitter

PR: 248725
Submitted by: Sergei Vyshenski <svysh.fbsd@gmail.com>