Drop package facades: update compiler tests.

compiler/testData/compileJavaAgainstKotlin/property/Extensions.java

@@ -2,9 +2,9 @@ package test;
 
 class GenericArray {
     {
-        TestPackage.getVal_("");
+        ExtensionsKt.getVal_("");
 
-        TestPackage.getVar_("");
-        TestPackage.setVar_("", "");
+        ExtensionsKt.getVar_("");
+        ExtensionsKt.setVar_("", "");
     }
 }

compiler/testData/compileJavaAgainstKotlin/property/GenericProperty.java

@@ -2,6 +2,6 @@ package test;
 
 class GenericProperty {
     void foo() {
-        java.util.Map<String, Integer> o = TestPackage.getTest(new java.util.HashMap<Integer, String>());
+        java.util.Map<String, Integer> o = GenericPropertyKt.getTest(new java.util.HashMap<Integer, String>());
     }
 }

compiler/testData/compileJavaAgainstKotlin/property/platformName/PlatformName.java

@@ -2,7 +2,7 @@ package test;
 
 public class PlatformName {
     public static void main(String[] args) {
-        int x = TestPackage.vget();
-        TestPackage.vset(0);
+        int x = PlatformNameKt.vget();
+        PlatformNameKt.vset(0);
     }
 }