+ * "git rebase", unlike all other callers of "gc --auto", did not
+ ignore the exit code from "gc --auto".
+ (merge 8c24f5b jk/ok-to-fail-gc-auto-in-rebase later to maint).
+
+ * Many codepaths that run "gc --auto" before exiting kept packfiles
+ mapped and left the file descriptors to them open, which was not
+ friendly to systems that cannot remove files that are open. They
+ now close the packs before doing so.
+ (merge d562102 js/close-packs-before-gc later to maint).
+