Dumped code from the wasm2cretonne repo.

Integrated wasm test suite translation as cretonne test

Fixes #146.
Fixes #143.

cranelift/wasmtests/call.wast

@@ -0,0 +1,10 @@
+(module
+  (func $main (local i32)
+    (set_local 0 (i32.const 0))
+    (drop (call $inc))
+  )
+  (func $inc (result i32)
+    (i32.const 1)
+  )
+  (start $main)
+)