Resolve elided lifetimes in extern/foreign statics to `'static`

[BlankWasThere]

The following code gives compiler error.

unsafe extern "C" {
    static WORLD: &str;
}

error[E0106]: missing lifetime specifier
 --> src\bin\runner.rs:6:24
  |
6 |     static WORLD: &str;
  |                   ^ expected named lifetime parameter

For more information about this error, try `rustc --explain E0106`.
error: could not compile `extern_test` (bin "runner") due to 1 previous error

What I expected: The compiler should automatically infer the lifetime of WORLD as 'static.

The bug is still there in nightly toolchain.

P.S. The imported library is a rust cdylib compiled together (and with the same compiler version).