Wrapped lines lead to wrong problems

[kieferrm]

• VSCode Version: Code - Insiders 1.15.0-insider (6feff11, 2017-08-04T17:53:03.136Z)
• OS Version: Windows_NT x64 10.0.15063

The windows smoke test fails on https://github.com/Microsoft/vscode/blob/master/test/smoke/src/tests/tasks.ts#L51.

The reason for this is that the terminal is wrapping the error message and the problem matcher only picks up the wrapped part of the line:

[roblourens]

It looks like the terminal task runner isn't getting unwrapped lines on windows - I think this is essentially what the discussion at #29840 (comment) is about.