Fix for Issue #214 re-introduce issue #16

[mingxhu]

With Ver 2.1.0 prometheus fails when WebLogic runs on Windows platform with #16, but Ver 2.0.7 works properly. From link b72a1f2 the change for #214

    void printMetric(String name, Object value) {
 -       print(name + " " + value + '\n');
 +       print(name + " " + value + System.lineSeparator());
        scrapeCount++;
    }

Which in fact reverts the fixed for #16

[russgold]

To satisfy other requirements, I have re-implemented this in a different way. Could you please try the 'issue_218' branch?

[mingxhu]

Tested with build from 'issue_218' branch, it works, thanks Russell!