Avoid "warning: [unchecked] Possible heap pollution from parameterized vararg…

Avoid "warning: [unchecked] Possible heap pollution from parameterized vararg type" (should use @SafeVarargs, but Java 6 doesn't support that yet)

h2/src/tools/org/h2/dev/util/ImmutableArray.java

@@ -112,6 +112,7 @@ public final class ImmutableArray<K> implements Iterable<K> {
      * @param array the data
      * @return the new immutable array
      */
+    @SuppressWarnings("unchecked")
     public static <K> ImmutableArray<K> create(K... array) {
         return new ImmutableArray<K>(array);
     }

h2/src/tools/org/h2/dev/util/ImmutableArray2.java

@@ -151,6 +151,7 @@ public final class ImmutableArray2<K> implements Iterable<K> {
      * @param array the data
      * @return the new immutable array
      */
+    @SuppressWarnings("unchecked")
     public static <K> ImmutableArray2<K> create(K... array) {
         return new ImmutableArray2<K>(array, array.length);
     }

h2/src/tools/org/h2/dev/util/ImmutableArray3.java

@@ -84,6 +84,7 @@ public abstract class ImmutableArray3<K> implements Iterable<K> {
      * @param array the data
      * @return the new immutable array
      */
+    @SuppressWarnings("unchecked")
     public static <K> ImmutableArray3<K> create(K... array) {
         return new Plain<K>(array);
     }