Initial reorg.

This is largely the same as #305, but updated for the current tree.

crates/misc/py/examples/two_modules/one.rs

@@ -0,0 +1,17 @@
+
+extern "C" {
+    fn answer() -> u32;
+}
+
+// For the purpose of this wasm example, we don't worry about multi-threading,
+// and will be using the PLACE in unsafe manner below.
+static mut PLACE: u32 = 23;
+
+#[no_mangle]
+pub extern fn bar() -> *const u32 {
+    unsafe { 
+        PLACE = answer();
+        // Return a pointer to the exported memory.
+        (&PLACE) as *const u32
+    }
+}