Allow Build on Windows

[selenium34]

Builds on windows were failing due to specs relying on *Nix line endings
/ file separators.

[Fuud]

@pniederw @alkemist This issue affects all who want develop Spock under Windows. Can you please merge this pull-request. Thanks.

[pniederw]

This is now merged. Thanks for the PR and reminder. I'm currently setting up a Windows CI build to detect such problems sooner in the future.

[selenium34]

From what I remember I used three different methodologies to resolve this issue with the thought that a single consolidated utility might be created to resolve in a consistent fashion.

When I created the request, I didn't see anything I could easily reuse, hence the potpourri of replacement methods.

[pniederw]

Agreed. Perhaps TextUtil#normalizeLineSeparators and IoUtil#normalizeFileSeparators could be added. Even better if Spock offered a public API for solving such problems, as users will likely run into them as well.

Another simplification would be to use String#replace instead of String#replaceAll.

[selenium34]

That would be nice.

I should have commented as such when i originally submitted the thought process on the inconsistency.

[pniederw]

No problem. Good news it that we now have a Windows CI build: https://ci.appveyor.com/project/pniederw/spock