To make sure that our binarySearch implementation meets the requirements of
the library, I added more tests for ol.geom.flat.interpolate.lineString, only
to find out that it does not handle line strings with repeated vertices
properly, regardless of what binarySearch implementation is used.
With this commit test files provide namespaces (using goog.provide). This fixes the issue reported by @bartvde where goog objects cannot be used in Jasmine "describe" functions. It also frees us from having to add script tags for the test files in test/ol.html.
