Add tests that were used to reproduce issues with LazyVals.

Author: DarkDimius

tests/run/Lazies1.scala

@@ -0,0 +1,6 @@
+object T{ @volatile lazy val s = null}
+object Test{
+  def main(args: Array[String]): Unit = {
+    T.s
+  }
+}

tests/run/Lazies2.scala

@@ -0,0 +1,8 @@
+class T{ @volatile lazy val s = null}
+object T{ @volatile lazy val s = null}
+object Test{
+  def main(args: Array[String]): Unit = {
+    T.s
+    (new T).s
+  }
+}