Clean code
Sample: Use 1.9.2 jar
Changed API: MemoryCache.remove(...) : void ->MemoryCache.remove(...) : Bitmap
Tests for ImageSizeUtils.computeImageSampleSize()
Micro optimization in ImageSizeUtils
Changed ImageScaleType.NONE to not scale down images anyway.
Introduced ImageScaleType.NONE_SAFE to consider max texture size.