www/newsboat: Update to 2.10.2

• Install manpages
• Update pkg-descr: newsbeuter -> newsboat
• Remove PODCAST option. Podboat is always built and has no extra dependencies, so we might as well always install it.
• Remove all post-patch cruft that does nothing anymore
• Perl isn't used during the build anymore, so remove it.

PR: 223784
Submitted by: mt@markoturk.info (maintainer, based on)