Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>

vendor/winapi-x86_64-pc-windows-gnu/Cargo.toml

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+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g. crates.io) dependencies
+#
+# If you believe there's an error in this file please file an
+# issue against the rust-lang/cargo repository. If you're
+# editing this file be aware that the upstream Cargo.toml
+# will likely look very different (and much more reasonable)
+
+[package]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+authors = ["Peter Atashian <retep998@gmail.com>"]
+build = "build.rs"
+include = ["src/*", "lib/*", "Cargo.toml", "build.rs"]
+description = "Import libraries for the x86_64-pc-windows-gnu target. Please don't use this crate directly, depend on winapi instead."
+keywords = ["windows"]
+license = "MIT/Apache-2.0"
+repository = "https://github.com/retep998/winapi-rs"

vendor/winapi-x86_64-pc-windows-gnu/build.rs

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+// Copyright © 2016-2018 winapi-rs developers
+// Licensed under the Apache License, Version 2.0
+// <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
+// All files in the project carrying such notice may not be copied, modified, or distributed
+// except according to those terms.
+fn main() {
+    use std::env::var;
+    use std::path::Path;
+    println!("cargo:rerun-if-env-changed=WINAPI_NO_BUNDLED_LIBRARIES");
+    if var("WINAPI_NO_BUNDLED_LIBRARIES").is_ok() {
+        return;
+    }
+    if var("TARGET").map(|target| target == "x86_64-pc-windows-gnu").unwrap_or(false) {
+        let dir = var("CARGO_MANIFEST_DIR").unwrap();
+        println!("cargo:rustc-link-search=native={}", Path::new(&dir).join("lib").display());
+    }
+}