Added bitcount to standard interfaces and bitop to MultiKey interfaces (since it is non-shardable)

Merge branch 'impl-bitcount-and-bitop' of git://github.com/koron/jedis

Conflicts:
	src/main/java/redis/clients/jedis/JedisCommands.java

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

@@ -511,4 +511,16 @@ public class ShardedJedis extends BinaryShardedJedis implements JedisCommands {
 	Jedis j = getShard(key);
 	return j.linsert(key, where, pivot, value);
     }
+
+    public Long bitcount(final String key) {
+	Jedis j = getShard(key);
+	return j.bitcount(key);
+    }
+
+    public Long bitcount(final String key, long start, long end) {
+	Jedis j = getShard(key);
+	return j.bitcount(key, start, end);
+    }
+
+
 }