Upgrade to JRedis master

DATAREDIS-54, DATAREDIS-174, DATAREDIS-129

- Switch to original JRedis for 2.6 support

- Remove base64 encoding as new JRedis supports binary
keys

- Add JredisPool interface to replace removed
JRedisService and pool implementation

- Temporarily switch integration tests to use
non-pooled connections

- Throw more specific Exception on JRedis connection
failures

src/test/resources/org/springframework/data/redis/connection/jredis/JRedisConnectionIntegrationTests-context.xml

@@ -3,12 +3,8 @@
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
 	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
 
-	<!-- DATAREDIS-154 We can't pool connections for this test because JRedis
-		closes connections on Exception but doesn't remove them from the pool or
-		reconnect them on next attempted use -->
 	<bean id="jredisConnectionFactory "
-		class="org.springframework.data.redis.connection.jredis.JredisConnectionFactory"
-		p:usePool="false">
+		class="org.springframework.data.redis.connection.jredis.JredisConnectionFactory">
 		<property name="hostName">
 			<bean class="org.springframework.data.redis.SettingsUtils"
 				factory-method="getHost" />