chmod, install, uucore: fix build on Windows

src/chmod/chmod.rs

@@ -20,6 +20,7 @@ use std::fs;
 use std::os::unix::fs::{MetadataExt, PermissionsExt};
 use std::path::Path;
 use walker::Walker;
+#[cfg(not(windows))]
 use uucore::mode;
 
 const NAME: &'static str = "chmod";

src/install/mode.rs

@@ -2,6 +2,7 @@ extern crate libc;
 
 use std::path::Path;
 use std::fs;
+#[cfg(not(windows))]
 use uucore::mode;
 
 /// Takes a user-supplied string and tries to parse to u16 mode bitmask.

src/uucore/lib.rs

@@ -17,9 +17,9 @@ pub mod utf8;
 pub mod encoding;
 #[cfg(feature = "parse_time")]
 pub mod parse_time;
-#[cfg(feature = "mode")]
-pub mod mode;
 
+#[cfg(all(not(windows), feature = "mode"))]
+pub mod mode;
 #[cfg(all(unix, not(target_os = "fuchsia"), feature = "utmpx"))]
 pub mod utmpx;
 #[cfg(all(unix, feature = "utsname"))]