added variadic versions of lpush/rpush(x) functions

src/main/java/redis/clients/jedis/ShardedJedis.java

@@ -221,7 +221,7 @@ public class ShardedJedis extends BinaryShardedJedis implements JedisCommands {
 	return j.lpush(key, strings);
     }
 
-    public Long lpushx(String key, String string) {
+    public Long lpushx(String key, String... string) {
 	Jedis j = getShard(key);
 	return j.lpushx(key, string);
     }
@@ -236,7 +236,7 @@ public class ShardedJedis extends BinaryShardedJedis implements JedisCommands {
         return j.move(key, dbIndex);
     }
 
-    public Long rpushx(String key, String string) {
+    public Long rpushx(String key, String... string) {
 	Jedis j = getShard(key);
 	return j.rpushx(key, string);
     }