Merge branch 'jk/rm-removed-paths'

A handful of test cases and a corner case bugfix for "git rm".

* jk/rm-removed-paths:
  t3600: document failure of rm across symbolic links
  t3600: test behavior of reverse-d/f conflict
  rm: do not complain about d/f conflicts during deletion

dir.c

@@ -1647,7 +1647,7 @@ int remove_path(const char *name)
 {
 	char *slash;
 
-	if (unlink(name) && errno != ENOENT)
+	if (unlink(name) && errno != ENOENT && errno != ENOTDIR)
 		return -1;
 
 	slash = strrchr(name, '/');