* Mark BROKEN if any of external lua library options are
enabled. Upstream add new APIs to bundled lua library and use them
in source code of redis. This makes it impossible to compile and
link redis with external lua libraries. According to the commit
message of upstream repository they took the code of new API from
the repository of lua. It means linking with external lua libraries
may get possible again if they are updated. So mark BROKEN rather
than remove these options.
* Update CONFLICTS of databases/redis*.
* Switch to DISTVERSION.
* Pet portlint and portclippy.
* Tidy up Makefile with portfmt.
ChangeLog: https://github.com/redis/redis/releases/tag/7.0.0
Security: cc42db1c-c65f-11ec-ad96-0800270512f4
27e36df36a