* The command line completion (in contrib/) for "git stash" has been
updated.
+ * "git subtree" updates.
+
Performance, Internal Implementation, Development Support etc.
* Portability fix for command line completion script (in contrib/).
(merge f2acf763e2 si/zsh-complete-comment-fix later to maint).
+ * "git repack -A -d" in a partial clone unnecessarily loosened
+ objects in promisor pack.
+
* Other code cleanup, docfix, build fix, etc.
(merge f451960708 dl/cat-file-doc-cleanup later to maint).
(merge 12604a8d0c sv/t9801-test-path-is-file-cleanup later to maint).