fixed eclipse warnings

gson/src/main/java/com/google/gson/internal/StringMap.java

@@ -59,6 +59,7 @@ public final class StringMap<V> extends AbstractMap<String, V> {
    * is set to half the minimum, so that the first resize will create a
    * minimum-sized table.
    */
+  @SuppressWarnings("rawtypes")
   private static final Entry[] EMPTY_TABLE = new LinkedEntry[MINIMUM_CAPACITY >>> 1];
 
   /**

gson/src/test/java/com/google/gson/GsonBuilderTest.java

@@ -39,6 +39,7 @@ public class GsonBuilderTest extends TestCase {
     assertEquals("{\"d\":\"d\"}", gson.toJson(new HasModifiers()));
   }
 
+  @SuppressWarnings("unused")
   static class HasModifiers {
     private String a = "a";
     volatile String b = "b";

gson/src/test/java/com/google/gson/functional/InstanceCreatorTest.java

@@ -85,6 +85,7 @@ public class InstanceCreatorTest extends TestCase {
 
   // This regressed in Gson 2.0 and 2.1
   public void testInstanceCreatorForCollectionType() {
+    @SuppressWarnings("serial")
     class SubArrayList<T> extends ArrayList<T> {}
     InstanceCreator<List<String>> listCreator = new InstanceCreator<List<String>>() {
       public List<String> createInstance(Type type) {