evaluator: significant performance enhancements

minimal/src/main/kotlin/gay/pizza/pork/minimal/Tool.kt

@@ -58,6 +58,6 @@ abstract class Tool {
       addNativeProvider("ffi", JnaNativeProvider())
       addNativeProvider("java", JavaNativeProvider())
     })
-    main.call(Arguments(emptyList()))
+    main.call(emptyList(), CallStack())
   }
 }

minimal/src/main/kotlin/gay/pizza/pork/minimal/main.kt

@@ -11,6 +11,5 @@ fun main(args: Array<String>) {
   }
   val path = PlatformFsProvider.resolve(args[0])
   val tool = FileTool(path)
-  val scope = Scope()
-  tool.run(scope)
+  tool.run(Scope.root())
 }