Updating the references to Exuberant ctags in the Vim help files

[Yegappan Lakshmanan]

Hi all,

The Vim help files refer to exuberant ctags in several places.
Exuberant ctags is not maintained for quite some time.
The last official release was made in July 2009.

Universal ctags is a maintained replacement for exuberant ctags.
The repository for this is at https://github.com/universal-ctags/ctags.
This is mostly backward compatible with exuberant ctags and
has added support for parsing a lot more languages.

Should we update the Vim help files to refer to Universal ctags instead
of Exuberant ctags?

Regards,
Yegappan

[Gary Johnson]

I think so. There are a few places where we should continue to
mention Exuberant ctags as a supported program, but where we
recommend some version or provide an example, it should be Universal
ctags.

Regards,
Gary