Update nitrokey crate to 0.4.0

This change finally updates the version of the nitrokey crate that we
consume to 0.4.0. Along with that we update rand_core, one of its
dependencies, to 0.5.1. Further more we add cfg-if in version 0.1.10 and
getrandom in version 0.1.13, both of which are now new (non-development)
dependencies.

Import subrepo nitrokey/:nitrokey at e81057037e9b4f370b64c0a030a725bc6bdfb870
Import subrepo cfg-if/:cfg-if at 4484a6faf816ff8058088ad857b0c6bb2f4b02b2
Import subrepo getrandom/:getrandom at d661aa7e1b8cc80b47dabe3d2135b3b47d2858af
Import subrepo rand/:rand at d877ed528248b52d947e0484364a4e1ae59ca502

1 files changed, 19 insertions, 0 deletions

diff --git a/getrandom/build.rs b/getrandom/build.rs
new file mode 100644
index 0000000..1beb4ed
--- /dev/null
+++ b/getrandom/build.rs
@@ -0,0 +1,19 @@
+#![deny(warnings)]
+
+use std::env;
+
+fn main() {
+    let target = env::var("TARGET").expect("TARGET was not set");
+    if target.contains("-uwp-windows-") {
+        // for BCryptGenRandom
+        println!("cargo:rustc-link-lib=bcrypt");
+        // to work around unavailability of `target_vendor` on Rust 1.33
+        println!("cargo:rustc-cfg=getrandom_uwp");
+    } else if target.contains("windows") {
+        // for RtlGenRandom (aka SystemFunction036)
+        println!("cargo:rustc-link-lib=advapi32");
+    } else if target.contains("apple-ios") {
+        // for SecRandomCopyBytes and kSecRandomDefault
+        println!("cargo:rustc-link-lib=framework=Security");
+    }
+}