[PR][php-langspec][#93][master] - Convert tabs to spaces and remove trailing whitespace in tests

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Newsgroups php.standards
Message-ID <[email protected]> 
You can view the Pull Request on github:
https://github.com/php/php-langspec/pull/93

Pull Request Description:
HHVM style guidelines specify using spaces instead of hard tabs and not to have trailing whitespaces. I removed them from all the `*.php` files in `tests`. In other words, this pull request doesn't mess with the `.phpt` files as I didn't know if `php-src` cares about this sort of thing.
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