Merge branch 'mm/status-suggest-merge-abort' into maint

"git status" learned to suggest "merge --abort" during a conflicted
merge, just like it already suggests "rebase --abort" during a
conflicted rebase.

* mm/status-suggest-merge-abort:
  status: suggest 'git merge --abort' when appropriate

diff --cc wt-status.c
index 617a28430449b8df19815c31f860338ec98f8c31,f6f112b48cc1d7a7ca60d0712f0cd830614071e9..b96be25966c32c0e7a5d1521955a5fdf89462288
--- 1/wt-status.c
--- 2/wt-status.c
+++ b/wt-status.c
@@@ -947,11 -946,13 +947,14 @@@ static void show_merge_in_progress(stru
  {
        if (has_unmerged(s)) {
                status_printf_ln(s, color, _("You have unmerged paths."));
-               if (s->hints)
+               if (s->hints) {
                        status_printf_ln(s, color,
-                               _("  (fix conflicts and run \"git commit\")"));
+                                        _("  (fix conflicts and run \"git commit\")"));
+                       status_printf_ln(s, color,
+                                        _("  (use \"git merge --abort\" to abort the merge)"));
+               }
        } else {
 +              s-> commitable = 1;
                status_printf_ln(s, color,
                        _("All conflicts fixed but you are still merging."));
                if (s->hints)