rustpkg: Disable test suite on windows

sha1, version, util tests are still alive and they pass on win32.

src/librustpkg/lib.rs

@@ -70,7 +70,7 @@ mod search;
 mod sha1;
 mod source_control;
 mod target;
-#[cfg(test)]
+#[cfg(not(windows), test)] // FIXME test failure on windows: #10471
 mod tests;
 mod util;
 pub mod version;