Fix imports.

hikaricp-java6/src/main/java/com/zaxxer/hikari/util/PoolUtilities.java

@@ -5,12 +5,15 @@ import java.lang.reflect.Field;
 import java.sql.Connection;
 import java.sql.SQLException;
 import java.sql.Statement;
+import java.util.Properties;
 import java.util.concurrent.LinkedBlockingQueue;
 import java.util.concurrent.ThreadFactory;
 import java.util.concurrent.ThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.locks.AbstractQueuedLongSynchronizer;
 
+import javax.sql.DataSource;
+
 public final class PoolUtilities
 {
    public static final boolean IS_JAVA7;