Base support of StackValue.Property inlining

compiler/testData/codegen/boxInline/property/simple.kt

@@ -0,0 +1,25 @@
+// FILE: 1.kt
+package test
+
+var value: Int = 0
+
+inline var z: Int
+    get() = ++value
+    set(p: Int) { value = p }
+
+// FILE: 2.kt
+import test.*
+
+fun box(): String {
+    val v = z
+    if (value != 1) return "fail 1: $value"
+
+    z = v + 2
+
+    if (value != 3) return "fail 2: $value"
+    var p = z
+
+    if (value != 4)  return "fail 3: $value"
+
+    return "OK"
+}

compiler/testData/codegen/boxInline/property/simpleExtension.kt

@@ -0,0 +1,25 @@
+// FILE: 1.kt
+package test
+
+var value: Int = 0
+
+inline var Int.z: Int
+    get() = this + ++value
+    set(p: Int) { value = p + this}
+
+// FILE: 2.kt
+import test.*
+
+fun box(): String {
+    val v = 11.z
+    if (v != 12) return "fail 1: $v"
+
+    11.z = v + 2
+
+    if (value != 25) return "fail 2: $value"
+    var p = 11.z
+
+    if (p != 37)  return "fail 3: $p"
+
+    return "OK"
+}