Split KotlinInfo annotation into two: KotlinClass and KotlinPackage

Two annotations are needed to properly distinguish package classes

runtime/src/jet/KotlinClass.java

@@ -20,7 +20,7 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 
 @Retention(RetentionPolicy.RUNTIME)
-public @interface KotlinInfo {
+public @interface KotlinClass {
     int abiVersion();
 
     String[] data();

runtime/src/jet/KotlinPackage.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2010-2013 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package jet;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+@Retention(RetentionPolicy.RUNTIME)
+public @interface KotlinPackage {
+    int abiVersion();
+
+    String[] data();
+}