News parser function

This function parses a symbol custom database and returns a value of one on bars where the database field data contain a specific word.
This function accepts three parameters. The first one is the database name (Example: ' yahoo_news ' if you are using the yahoo news downloader - Yahoo News), the second one is the field name (Using the same downloader, it should be 'title') and finally the last parameter is a list of the words we are searching for. You can add one or many words by separating them with a comma.

Here is an example: (This function's name is 'ContainsWords')
indicator1 = ContainsWords('yahoo_news', 'title', 'Buy,Jump,Big,Rise');

In addition, here is a snapshot of the 'yahoo_news' database for the stock symbol 'aa':
25/09/2009 15:14 -       Alcoa Stock: Time to Buy Yet?
25/09/2009 16:11 -       Alcoa Announces Third Quarter 2009 Dividend
25/09/2009 12:45 -       Wall to Wall Street Coverage: Upgrades and Downgrades
25/09/2009 00:01 -       [$$] Alcoa Leads Decline; Red Hat Is White Hot
24/09/2009 21:33 -       Will RIM Drag Down Stocks, Friday?

On 25 September 2009, the function returns 1, because at 15:14, a news item contains the word 'Buy'.
On 24 September 2009, the function returns 0.

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