[PR][php-langspec][#97][master] - Convert tabs to 2 spaces in .php files (not .phpt)

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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/97

Warning: according to github, the Pull Request cannot be merged without manual conflict resolution!

Pull Request Description:
The HHVM style guideline is 2 spaces instead of hard tabs. So I changed the HHVM-based test files to contain them. I did not touch the `.phpt` files in case that is how php-src likes them.
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