fix sprites for pixel ratios that are not 1 and 2

- OpenGL ES 2 doesn't allow NPOT textures with wrap-around
- The Sprite object reported the map's pixelRatio, even though it loaded @2x assets
- Copying icons from the sprite into the atlas now uses bilinear scaling to scale up to the actual size

platform/default/sqlite_cache.cpp

@@ -5,10 +5,10 @@
 #include <mbgl/util/util.hpp>
 #include <mbgl/util/async_queue.hpp>
 #include <mbgl/util/variant.hpp>
+#include <mbgl/util/compression.hpp>
 #include <mbgl/platform/log.hpp>
 
 #include "sqlite3.hpp"
-#include "compression.hpp"
 
 #include <uv.h>