Add more / sort executable paths

[valpackett]

• They're called 'uctags' and 'exctags' in the official FreeBSD packages
• Prefer universal > exuberant > ctags

[dan-t]

Thanks! It's fine to add the additional names but I don't see a need for changing the order.

[valpackett]

Universal is the better version, why not check for it first?

[dan-t]

Universal is the better version, why not check for it first?

I prefer to not break defaults if there's no need for it.

[dan-t]

rusty-tags 2.10 now contains the FreeBSD names, but I didn't change the search order.

There's now also the option ctags_exe in ~/.rusty-tags/config.toml to specify the ctags executable to be used.