Fixed #595:

The byte version of pipeline.getrange should returns byte[] instead of Long.

TESTED:
export TEST=PipeliningTest
make test

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

@@ -34,7 +34,7 @@ public interface BinaryRedisPipeline {
 
     Response<byte[]> getSet(byte[] key, byte[] value);
 
-    Response<Long> getrange(byte[] key, long startOffset, long endOffset);
+    Response<byte[]> getrange(byte[] key, long startOffset, long endOffset);
 
     Response<Long> hdel(byte[] key, byte[]... field);