Update HISTORY.md and version.h for 7.0 release (#9609)

Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/9609

Reviewed By: riversand963

Differential Revision: D34370309

Pulled By: ajkr

fbshipit-source-id: 5fc9306439aefa4b2d61d847534ea6758c30b6a5

HISTORY.md

@@ -1,5 +1,5 @@
 # Rocksdb Change Log
-## Unreleased
+## 7.0.0 (02/20/2022)
 ### Bug Fixes
 * Fixed a major bug in which batched MultiGet could return old values for keys deleted by DeleteRange when memtable Bloom filter is enabled (memtable_prefix_bloom_size_ratio > 0). (The fix includes a substantial MultiGet performance improvement in the unusual case of both memtable_whole_key_filtering and prefix_extractor.)
 * Fixed more cases of EventListener::OnTableFileCreated called with OK status, file_size==0, and no SST file kept. Now the status is Aborted.

include/rocksdb/version.h

@@ -9,8 +9,8 @@
 
 #include "rocksdb/rocksdb_namespace.h"
 
-#define ROCKSDB_MAJOR 6
-#define ROCKSDB_MINOR 29
+#define ROCKSDB_MAJOR 7
+#define ROCKSDB_MINOR 0
 #define ROCKSDB_PATCH 0
 
 // Do not use these. We made the mistake of declaring macros starting with