use Array.clone instead of Arrays.copyOf, to be compliant with java 5

git-svn-id: https://smali.googlecode.com/svn/trunk@700 55b6fa8a-2a1e-11de-a435-ffa8d773f76a

dexlib/src/main/java/org/jf/dexlib/OdexDependencies.java

@@ -72,6 +72,6 @@ public class OdexDependencies {
     }
 
     public byte[] getDependencyChecksum(int index) {
-        return Arrays.copyOf(dependencyChecksums[index], dependencyChecksums.length);
+        return dependencyChecksums[index].clone();
     }
 }