Explicit equals method for primitives and correct global equals method.

Includes cosmetics.
#KT-2372 Fixed

js/js.tests/test/org/jetbrains/k2js/test/semantics/EqualsTest.java

@@ -22,7 +22,7 @@ public final class EqualsTest extends AbstractExpressionTest {
         super("equals/");
     }
 
-    public void TODO_testCustomEqualsMethodOnAny() throws Exception {
+    public void testCustomEqualsMethodOnAny() throws Exception {
         fooBoxTest();
     }
 
@@ -34,6 +34,10 @@ public final class EqualsTest extends AbstractExpressionTest {
         fooBoxTest();
     }
 
+    public void testExplicitEqualsMethodForPrimitives() throws Exception {
+        fooBoxTest();
+    }
+
     public void testStringsEqual() throws Exception {
         fooBoxTest();
     }