Vendor dependencies for 0.3.0 release

vendor/winit/build.rs

@@ -0,0 +1,27 @@
+use cfg_aliases::cfg_aliases;
+
+fn main() {
+    // The script doesn't depend on our code.
+    println!("cargo:rerun-if-changed=build.rs");
+
+    // Setup cfg aliases.
+    cfg_aliases! {
+        // Systems.
+        android_platform: { target_os = "android" },
+        web_platform: { all(target_family = "wasm", target_os = "unknown") },
+        macos_platform: { target_os = "macos" },
+        ios_platform: { target_os = "ios" },
+        windows_platform: { target_os = "windows" },
+        apple: { any(target_os = "ios", target_os = "macos") },
+        free_unix: { all(unix, not(apple), not(android_platform), not(target_os = "emscripten")) },
+        redox: { target_os = "redox" },
+
+        // Native displays.
+        x11_platform: { all(feature = "x11", free_unix, not(redox)) },
+        wayland_platform: { all(feature = "wayland", free_unix, not(redox)) },
+        orbital_platform: { redox },
+    }
+
+    // Winit defined cfgs.
+    println!("cargo:rustc-check-cfg=cfg(unreleased_changelogs)");
+}