RPM build fix (reverted CI changes which will need to be un-reverted or made conditional) and vendor Rust dependencies to make builds much faster in any CI system.

zeroidc/vendor/cbindgen/tests/rust/cfg_2.rs

@@ -0,0 +1,32 @@
+#[cfg(any(windows, unix))]
+#[repr(C)]
+struct Foo {
+    x: i32,
+}
+
+#[cfg(windows)]
+#[repr(C)]
+struct Bar {
+    y: Foo,
+}
+
+#[cfg(unix)]
+#[repr(C)]
+struct Bar {
+    z: Foo,
+}
+
+#[repr(C)]
+struct Root {
+    w: Bar,
+}
+
+#[cfg(windows)]
+pub const DEFAULT_X: i32 = 0x08;
+
+#[cfg(unix)]
+pub const DEFAULT_X: i32 = 0x2a;
+
+#[no_mangle]
+pub extern "C" fn root(a: Root)
+{ }