Replace ziplist with listpack in quicklist (#9740)

Part three of implementing #8702, following #8887 and #9366 .

## Description of the feature
1. Replace the ziplist container of quicklist with listpack.
2. Convert existing quicklist ziplists on RDB loading time. an O(n) operation.

## Interface changes
1. New `list-max-listpack-size` config is an alias for `list-max-ziplist-size`.
2. Replace `debug ziplist` command with `debug listpack`.

## Internal changes
1. Add `lpMerge` to merge two listpacks . (same as `ziplistMerge`)
2. Add `lpRepr` to print info of listpack which is used in debugCommand and `quicklistRepr`. (same as `ziplistRepr`)
3. Replace `QUICKLIST_NODE_CONTAINER_ZIPLIST` with `QUICKLIST_NODE_CONTAINER_PACKED`(following #9357 ).
    It represent that a quicklistNode is a packed node, as opposed to a plain node.
4. Remove `createZiplistObject` method, which is never used.
5. Calculate listpack entry size using overhead overestimation in `quicklistAllowInsert`.
    We prefer an overestimation, which would at worse lead to a few bytes below the lowest limit of 4k.

## Improvements
1. Calling `lpShrinkToFit` after converting Ziplist to listpack, which was missed at #9366.
2. Optimize `quicklistAppendPlainNode` to avoid memcpy data.

## Bugfix
1. Fix crash in `quicklistRepr` when ziplist is compressed, introduced from #9366.

## Test
1. Add unittest for `lpMerge`.
2. Modify the old quicklist ziplist corrupt dump test.

Co-authored-by: Oran Agra <oran@redislabs.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/util.c b/src/util.c
index 847799887..9cdc30632 100644
--- a/src/util.c
+++ b/src/util.c
@@ -552,7 +552,7 @@ int string2d(const char *s, size_t slen, double *dp) {
  * required. The representation should always be parsable by strtod(3).
  * This function does not support human-friendly formatting like ld2string
  * does. It is intended mainly to be used inside t_zset.c when writing scores
- * into a ziplist representing a sorted set. */
+ * into a listpack representing a sorted set. */
 int d2string(char *buf, size_t len, double value) {
     if (isnan(value)) {
         len = snprintf(buf,len,"nan");