Provide "equals" and "hashCode" for reflection objects

core/runtime.jvm/src/kotlin/reflect/jvm/internal/KClassImpl.kt

@@ -56,4 +56,10 @@ class KClassImpl<out T>(val jClass: Class<T>) : KClass<T> {
             else {
                 KMutableForeignMemberProperty<T, Any>(name, this)
             }
+
+    override fun equals(other: Any?): Boolean =
+            other is KClassImpl<*> && jClass == other.jClass
+
+    override fun hashCode(): Int =
+            jClass.hashCode()
 }

core/runtime.jvm/src/kotlin/reflect/jvm/internal/KForeignMemberProperty.kt

@@ -30,6 +30,12 @@ open class KForeignMemberProperty<T : Any, out R>(
     override fun get(receiver: T): R {
         return field.get(receiver) as R
     }
+
+    override fun equals(other: Any?): Boolean =
+            other is KForeignMemberProperty<*, *> && name == other.name && owner == other.owner
+
+    override fun hashCode(): Int =
+            name.hashCode() * 31 + owner.hashCode()
 }
 
 class KMutableForeignMemberProperty<T : Any, out R>(

core/runtime.jvm/src/kotlin/reflect/jvm/internal/KMemberPropertyImpl.kt

@@ -39,6 +39,12 @@ open class KMemberPropertyImpl<T : Any, out R>(
     override fun get(receiver: T): R {
         return getter(receiver) as R
     }
+
+    override fun equals(other: Any?): Boolean =
+            other is KMemberPropertyImpl<*, *> && name == other.name && owner == other.owner
+
+    override fun hashCode(): Int =
+            name.hashCode() * 31 + owner.hashCode()
 }
 
 class KMutableMemberPropertyImpl<T : Any, R>(

core/runtime.jvm/src/kotlin/reflect/jvm/internal/KPackageImpl.kt

@@ -18,4 +18,10 @@ package kotlin.reflect.jvm.internal
 
 import kotlin.reflect.KPackage
 
-class KPackageImpl(val jClass: Class<*>) : KPackage
+class KPackageImpl(val jClass: Class<*>) : KPackage {
+    override fun equals(other: Any?): Boolean =
+            other is KPackageImpl && jClass == other.jClass
+
+    override fun hashCode(): Int =
+            jClass.hashCode()
+}

core/runtime.jvm/src/kotlin/reflect/jvm/internal/KTopLevelExtensionPropertyImpl.kt

@@ -32,6 +32,12 @@ open class KTopLevelExtensionPropertyImpl<T, out R>(
     override fun get(receiver: T): R {
         return getter(null, receiver) as R
     }
+
+    override fun equals(other: Any?): Boolean =
+            other is KTopLevelExtensionPropertyImpl<*, *> && name == other.name && owner == other.owner && receiverClass == other.receiverClass
+
+    override fun hashCode(): Int =
+            (name.hashCode() * 31 + owner.hashCode()) * 31 + receiverClass.hashCode()
 }
 
 class KMutableTopLevelExtensionPropertyImpl<T, R>(

core/runtime.jvm/src/kotlin/reflect/jvm/internal/KTopLevelVariableImpl.kt

@@ -32,6 +32,12 @@ open class KTopLevelVariableImpl<out R>(
     override fun get(): R {
         return getter(null) as R
     }
+
+    override fun equals(other: Any?): Boolean =
+            other is KTopLevelVariableImpl<*> && name == other.name && owner == other.owner
+
+    override fun hashCode(): Int =
+            name.hashCode() * 31 + owner.hashCode()
 }
 
 class KMutableTopLevelVariableImpl<R>(