X.Org Server 1.19.3 Improves Driver Support by Reverting Page-Flipping Change

Coming about two weeks after the previous maintenance update, X.Org Server 1.19.3 improves support for various graphics drivers by reverting the “present: Allow flipping with PRIME slave outputs” and “prime: Sync shared pixmap from root window instead of screen pixmap” changes implemented by Michel D??nzer in X.Org Server 1.19.2. X.Org Server 1.19.3 is a small update but also improves support for XWayland, the X client under Wayland, by clearing the cursor frame callback and implement monitoring of client states to destroy callbacks. Moreover, it attempts to fix the missing declaration in dash vertex shader for Glamor.