Update Perl completion

I've updated very old Perl completions to add options that weren't there (and remove `-P` option that doesn't exist since Perl 5.12). It also gives hints for `-C` (also it gives `-dt` hint, but that's a small thing) option which takes limited set of arguments (and doesn't allow space after it).

If something is wrong with my pull request, please tell me. This is my first commit to this project.

(by the way, amazing shell :+1:... ok, enough offtopic)