Fixed issues with expire introduced with latest millisecond resolution...

Fixed issues with expire introduced with latest millisecond resolution feature. Many time_t were not converted to long long, and one time() call was not replaced with mstime().

src/aof.c

@@ -431,7 +431,7 @@ int rewriteAppendOnlyFile(char *filename) {
     FILE *fp;
     char tmpfile[256];
     int j;
-    time_t now = time(NULL);
+    long long now = mstime();
 
     /* Note that we have to use a different temp name here compared to the
      * one used by rewriteAppendOnlyFileBackground() function. */
@@ -462,7 +462,7 @@ int rewriteAppendOnlyFile(char *filename) {
         while((de = dictNext(di)) != NULL) {
             sds keystr;
             robj key, *o;
-            time_t expiretime;
+            long long expiretime;
 
             keystr = dictGetKey(de);
             o = dictGetVal(de);

src/debug.c

@@ -91,7 +91,7 @@ void computeDatasetDigest(unsigned char *final) {
         while((de = dictNext(di)) != NULL) {
             sds key;
             robj *keyobj, *o;
-            time_t expiretime;
+            long long expiretime;
 
             memset(digest,0,20); /* This key-val digest */
             key = dictGetKey(de);

src/rdb.c

@@ -597,7 +597,7 @@ int rdbSave(char *filename) {
     dictEntry *de;
     char tmpfile[256];
     int j;
-    time_t now = mstime();
+    long long now = mstime();
     FILE *fp;
     rio rdb;
 

src/redis.c

@@ -562,17 +562,17 @@ void activeExpireCycle(void) {
          * of the keys were expired. */
         do {
             long num = dictSize(db->expires);
-            time_t now = time(NULL);
+            long long now = mstime();
 
             expired = 0;
             if (num > REDIS_EXPIRELOOKUPS_PER_CRON)
                 num = REDIS_EXPIRELOOKUPS_PER_CRON;
             while (num--) {
                 dictEntry *de;
-                time_t t;
+                long long t;
 
                 if ((de = dictGetRandomKey(db->expires)) == NULL) break;
-                t = (time_t) dictGetVal(de);
+                t = dictGetSignedIntegerVal(de);
                 if (now > t) {
                     sds key = dictGetKey(de);
                     robj *keyobj = createStringObject(key,sdslen(key));