Fix dllimports of static data from rlibs

src/test/run-make/msvc-data-only/Makefile

@@ -0,0 +1,8 @@
+# Test that on *-pc-windows-msvc we can link to a rlib containing only data.
+# See #26591, #27438
+
+-include ../tools.mk
+
+all:
+	$(RUSTC) foo.rs
+	$(RUSTC) bar.rs

src/test/run-make/msvc-data-only/bar.rs

@@ -0,0 +1,15 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// 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. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+extern crate foo;
+
+fn main() {
+    println!("The answer is {} !", foo::FOO);
+}

src/test/run-make/msvc-data-only/foo.rs

@@ -0,0 +1,13 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// 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. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![crate_type = "rlib"]
+
+pub static FOO: i32 = 42;