fd-util: rename CLOSE_AND_REPLACE() -> close_and_replace()

We have free_and_replace() and friends, they are all named with lower
letters, even they are macros, not functions.
For consistency, let's rename CLOSE_AND_REPLACE() with lower letters.

This also mekes the macro used more places.

src/tmpfiles/tmpfiles.c

@@ -2184,7 +2184,7 @@ static int mkdir_parents_rm_if_wrong_type(mode_t child_mode, const char *path) {
                         return log_error_errno(r, "Failed to stat \"%s\" at \"%s\": %m", t, strnull(parent_name));
                 }
 
-                CLOSE_AND_REPLACE(parent_fd, next_fd);
+                close_and_replace(parent_fd, next_fd);
         }
 }