Only explicitly lock files on non-Windows platforms. Windows always locks when the file is opened, and the explicit lock results in a subsequent exception.
Merge pull request #28 from allgress/master

Only explicitly lock files on non-Windows platforms.
2.0.0-pre28 -- don't lock properties files when running on Windows
formatting
Merge branch 'master' into tempdirs
formatting
Merge branch 'master' into tempdirs