Switch LICENSE path to use slashes.

This way generating credits works on non-windows platforms.
Review URL: https://chromiumcodereview.appspot.com/9301014

git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/xulrunner-sdk@119756 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
1 file changed
tree: e08762d9e5a23b31ee16029bfc977e2b31b63870
  1. win/
  2. README.chromium