expose futimens() for illumos systems

Author: jclulow

src/unix/solarish/mod.rs

@@ -2157,6 +2157,10 @@ extern "C" {
         path: *const ::c_char,
         times: *const ::timeval,
     ) -> ::c_int;
+    pub fn futimens(
+        dirfd: ::c_int,
+        times: *const ::timespec,
+    ) -> ::c_int;
     pub fn utimensat(
         dirfd: ::c_int,
         path: *const ::c_char,