added mstime() to get UNIX time in milliseconds.

src/redis.c

@@ -288,6 +288,11 @@ long long ustime(void) {
     return ust;
 }
 
+/* Return the UNIX time in milliseconds */
+long long mstime(void) {
+    return ustime()/1000;
+}
+
 /*====================== Hash table type implementation  ==================== */
 
 /* This is an hash table type that uses the SDS dynamic strings libary as

src/redis.h

@@ -726,6 +726,7 @@ dictType hashDictType;
 
 /* Utils */
 long long ustime(void);
+long long mstime(void);
 
 /* networking.c -- Networking and Client related operations */
 redisClient *createClient(int fd);