javac-wrapper: refactoring, fixes and tests

compiler/testData/diagnostics/tests/duplicateJvmSignature/statics/kotlinClassExtendsJavaClass.kt

@@ -3,7 +3,7 @@
 // FILE: A.java
 
 public class A {
-    public static int a = 1
+    public static int a = 1;
     public static void foo() {}
     public static void baz(String s) {}
 }

compiler/testData/diagnostics/tests/duplicateJvmSignature/statics/kotlinMembersVsJavaNonVisibleStatics.txt

@@ -18,3 +18,17 @@ public open class K : foo.A {
         public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
     }
 }
+
+package foo {
+
+    public open class A {
+        public constructor A()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+        // Static members
+        public/*package*/ open fun bar(/*0*/ s: kotlin.Double): kotlin.Unit
+        private open fun foo(/*0*/ s: kotlin.Int): kotlin.Unit
+    }
+}