Avoid warnings on startup due to trying to set too high maxclients
and tcp-backlog.

Values observed on a Xperia Z4 Tablet running Android 7.0.
diff -u -r ../redis-3.2.8/redis.conf ./redis.conf
--- ../redis-3.2.8/redis.conf	2017-02-12 16:14:57.000000000 +0100
+++ ./redis.conf	2017-03-07 14:38:42.825991097 +0100
@@ -90,7 +90,7 @@
 # will silently truncate it to the value of /proc/sys/net/core/somaxconn so
 # make sure to raise both the value of somaxconn and tcp_max_syn_backlog
 # in order to get the desired effect.
-tcp-backlog 511
+tcp-backlog 128
 
 # Unix socket.
 #
@@ -501,7 +501,7 @@
 ################################### LIMITS ####################################
 
 # Set the max number of connected clients at the same time. By default
-# this limit is set to 10000 clients, however if the Redis server is not
+# this limit is set to 4000 clients, however if the Redis server is not
 # able to configure the process file limit to allow for the specified limit
 # the max number of allowed clients is set to the current file limit
 # minus 32 (as Redis reserves a few file descriptors for internal uses).
@@ -509,7 +509,7 @@
 # Once the limit is reached Redis will close all the new connections sending
 # an error 'max number of clients reached'.
 #
-# maxclients 10000
+# maxclients 4000
 
 # Don't use more memory than the specified amount of bytes.
 # When the memory limit is reached Redis will try to remove keys
diff -u -r ../redis-3.2.8/src/server.h ./src/server.h
--- ../redis-3.2.8/src/server.h	2017-02-12 16:14:57.000000000 +0100
+++ ./src/server.h	2017-03-07 14:38:53.357859408 +0100
@@ -79,7 +79,7 @@
 #define CONFIG_MIN_HZ            1
 #define CONFIG_MAX_HZ            500
 #define CONFIG_DEFAULT_SERVER_PORT        6379    /* TCP port */
-#define CONFIG_DEFAULT_TCP_BACKLOG       511     /* TCP listen backlog */
+#define CONFIG_DEFAULT_TCP_BACKLOG       128     /* TCP listen backlog */
 #define CONFIG_DEFAULT_CLIENT_TIMEOUT       0       /* default client timeout: infinite */
 #define CONFIG_DEFAULT_DBNUM     16
 #define CONFIG_MAX_LINE    1024
@@ -94,7 +94,7 @@
 #define AOF_REWRITE_ITEMS_PER_CMD 64
 #define CONFIG_DEFAULT_SLOWLOG_LOG_SLOWER_THAN 10000
 #define CONFIG_DEFAULT_SLOWLOG_MAX_LEN 128
-#define CONFIG_DEFAULT_MAX_CLIENTS 10000
+#define CONFIG_DEFAULT_MAX_CLIENTS 4000
 #define CONFIG_AUTHPASS_MAX_LEN 512
 #define CONFIG_DEFAULT_SLAVE_PRIORITY 100
 #define CONFIG_DEFAULT_REPL_TIMEOUT 60