Merge commit '1fb758e94b5b9e342b6dc6452cb5bd7cf0cc4ed6' * commit '1fb758e94b5b9e342b6dc6452cb5bd7cf0cc4ed6': Add (hidden for now) purgeable bitmaps
Merge commit '1fb758e94b5b9e342b6dc6452cb5bd7cf0cc4ed6' * commit '1fb758e94b5b9e342b6dc6452cb5bd7cf0cc4ed6': Add (hidden for now) purgeable bitmaps