Re: new function for tsquery creartion

Hi Victor,

> I like the idea and I think it's a great patch. However in current shape it
> requires some amount of reworking to meet PostgreSQL standards of code quality.

Also I would like to add that I agree with Thomas Munro:

> Calling this search syntax just "query" seems too general and
> overloaded.  "Simple search", "simple query", "web search", "web
> syntax", "web query", "Google-style query", "Poogle" (kidding!) ...
> well I'm not sure, but I feel like it deserves a proper name.
> websearch_to_tsquery()?

websearch_to_tsquery() sounds much better than query_to_tsquery().

Also I agree Tomas Vondra in regard that:

> 2) I don't think we should mention Google in the docs explicitly. Not
> that I'm somehow anti-google, but this syntax was certainly not invented
> by Google - I vividly remember using something like that on Altavista
> (yeah, I'm old). And it's used by pretty much every other web search
> engine out there ...

I suggest to rephrase:

```
+    about its input. <function>queryto_tsquery</function> provides a 
+    different, Google like syntax to create tsquery.
```

.. to something more like "provides a different syntax, similar to one
used in web search engines, to create tsqeury". And maybe give a few
examples right in the next sentence.

-- 
Best regards,
Aleksander Alekseev