Tile ranges are inclusive. When getting the tile range for an extent, the top-right corner of the extent should be considered with a different intersection policy than the bottom-left corner.
When the dom renderer included logic to stretch tiles so that gaps were properly filled for fractional zoom levels, we needed to take this into account when getting a tile coordinate for a given coordinate and resolution. This was never the proper logic for a renderer that wasn't stretching occassional tiles (e.g. the WebGL renderer, the Canvas renderer, or the new DOM renderer).
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.
