Move .java and .kotlin extension properties to kotlin.jvm

Delete the old ones in package kotlin.reflect.jvm because otherwise the code
using those functions will become red in a lot less meaningful way (overload
resolution ambiguity) than if they're deleted (unresolved import)

Based on the work originally done by @dnpetrov

 #KT-8380 Fixed

compiler/testData/codegen/boxWithStdlib/reflection/noKotlinReflect/javaClass.kt

@@ -0,0 +1,33 @@
+// NO_KOTLIN_REFLECT
+
+import kotlin.test.*
+
+class Klass
+
+fun box(): String {
+    val kClass = Klass::class
+    val jClass = kClass.java
+    val kjClass = Klass::class.java
+    val kkClass = jClass.kotlin
+    val jjClass = kkClass.java
+
+    assertEquals("Klass", jClass.getSimpleName())
+    assertEquals("Klass", kjClass.getSimpleName())
+    assertEquals("Klass", kkClass.simpleName)
+    assertEquals(kjClass, jjClass)
+
+    failsWith(Error::class.java) { kClass.simpleName!! }
+    failsWith(Error::class.java) { kClass.qualifiedName!! }
+    failsWith(Error::class.java) { kClass.members }
+
+    val jlError = Error::class.java
+    val kljError = Error::class
+    val jljError = kljError.java
+    val jlkError = jlError.kotlin
+
+    assertEquals("Error", jlError.getSimpleName())
+    assertEquals("Error", jljError.getSimpleName())
+    assertEquals("Error", jlkError.simpleName)
+
+    return "OK"
+}