Don't call man with --no-hyphenation.

That flag doesn't exist in the bsd version of man available on OS X.
w3mman2html: Ease debugging a bit.

I'm not sure what `@WORD@` variables are supposed to do in Perl, but it wasn't
doing it.

Logging a command is a lot easier if you have it assigned to a variable.
manpage: Use man name instead of filepath for parsing.
manpage: Use whatis instead of lexgrog.

This queries the system-installed manpages, rather than an arbitrary file.
This is what you'd expect, though, when using `explain [command]` on your local
system.