[HttpKernel] Clarify misleading comment in ExceptionListener
merged branch igorw/exception-listener-comment (PR #6611)

This PR was squashed before being merged into the 2.1 branch (closes #6611).

Commits
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bde5a7f [HttpKernel] Clarify misleading comment in ExceptionListener

Discussion
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[HttpKernel] Clarify misleading comment in ExceptionListener

Regression from 295860dfaf474604f242198ee487bc8c8045b8ae.

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by fabpot at 2013-01-08T09:02:53Z

The comment is right. Returning without a Response will re-throw the exception (in HttpKernel).

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by staabm at 2013-01-08T11:00:36Z

so the comment should point out, that the httpkernel will rethrow the exception in that case?

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by igorw at 2013-01-08T13:38:43Z

I missed that on the commit I linked. I've updated the patch to re-introduce the comment but clarify that `throw` is in HttpKernel.
removed the .gitattributes files (closes #6605, reverts #5674)
[Process] Fix docblocks, remove `return` from `PhpProcess#start()` as parent returns nothing, cleaned up `ExecutableFinder`