WIP: Decouple glutin from winit

Thit commit removes direct dependency on the winit and
using raw_window_handle crate instead

glutin/Cargo.toml

@@ -3,63 +3,39 @@ name = "glutin"
 version = "0.28.0"
 authors = ["The glutin contributors", "Pierre Krieger <pierre.krieger1708@gmail.com>"]
 description = "Cross-platform OpenGL context provider."
-keywords = ["windowing", "opengl"]
+keywords = ["windowing", "opengl", "egl", "glx", "wgl", "cgl"]
 license = "Apache-2.0"
 readme = "../README.md"
 repository = "https://github.com/rust-windowing/glutin"
 documentation = "https://docs.rs/glutin"
-edition = "2018"
-
-[package.metadata.docs.rs]
-features = ["serde"]
+edition = "2021"
 
 [features]
-serde = ["winit/serde"]
-x11 = ["winit/x11", "glutin_glx_sys"]
-wayland = ["winit/wayland", "winit/wayland-dlopen", "wayland-client", "wayland-egl"]
-wayland-dlopen = ["winit/wayland-dlopen"]
-default = ["x11", "wayland", "wayland-dlopen"]
+default = ["egl", "glx", "x11", "wayland", "wgl"]
+egl = ["glutin_egl_sys", "glutin_gles2_sys"]
+glx = ["x11", "x11-dl", "glutin_glx_sys"]
+wgl = []
+x11 = ["x11-dl"]
+wayland = ["wayland-egl"]
 
 [dependencies]
-lazy_static = "1.3"
-winit = { version = "0.26", default-features = false }
+libloading = "0.7.3"
+once_cell = "1.12"
+raw-window-handle = "0.5.0"
+bitflags = "1.3.2"
+
+[target.'cfg(target_os = "windows")'.dependencies]
+glutin_egl_sys = { version = "0.1.5", path = "../glutin_egl_sys", optional = true }
+glutin_gles2_sys = { version = "0.1.5", path = "../glutin_gles2_sys", optional = true }
 
 [target.'cfg(target_os = "android")'.dependencies]
 glutin_egl_sys = { version = "0.1.5", path = "../glutin_egl_sys" }
-libloading = "0.7"
-parking_lot = "0.11"
-raw-window-handle = "0.4"
-
-[target.'cfg(any(target_os = "ios", target_os = "macos"))'.dependencies]
-objc = "0.2.6"
 glutin_gles2_sys = { version = "0.1.5", path = "../glutin_gles2_sys" }
 
-[target.'cfg(target_os = "macos")'.dependencies]
-cgl = "0.3"
-cocoa = "0.24"
-core-foundation = "0.9"
-
-[target.'cfg(target_os = "windows")'.dependencies.winapi]
-version = "0.3"
-features = [
-    "winnt",
-    "winuser",
-    "wingdi",
-    "libloaderapi",
-]
-
-[target.'cfg(target_os = "windows")'.dependencies]
-libloading = "0.7"
-glutin_wgl_sys = { version = "0.1.5", path = "../glutin_wgl_sys" }
-glutin_egl_sys = { version = "0.1.5", path = "../glutin_egl_sys" }
-parking_lot = "0.11"
-
 [target.'cfg(any(target_os = "linux", target_os = "freebsd", target_os = "dragonfly", target_os = "netbsd", target_os = "openbsd"))'.dependencies]
-osmesa-sys = "0.1"
-wayland-client = { version = "0.29", features = ["dlopen"], optional = true }
-wayland-egl = { version = "0.29", optional = true }
-libloading = "0.7"
-glutin_egl_sys = { version = "0.1.5", path = "../glutin_egl_sys" }
+wayland-egl = { version = "0.29.4", optional = true }
+x11-dl = { version = "2.19.1", optional = true }
 glutin_glx_sys = { version = "0.1.7", path = "../glutin_glx_sys", optional = true }
-parking_lot = "0.11"
-log = "0.4"
+glutin_egl_sys = { version = "0.1.5", path = "../glutin_egl_sys", optional = true }
+glutin_gles2_sys = { version = "0.1.5", path = "../glutin_gles2_sys", optional = true }
+