[bug#60776] [PATCH] distdir/emacs: avoid `test -d` with MKDIR_P

[Karl Berry]

    -   test -d "$(distdir)" || mkdir "$(distdir)"
    +   $(AM_V_at)$(MKDIR_P) "$(distdir)"

Ok by me, but why the AM_V_at for this particular command?
I don't see it used anywhere else in distdir.am.

    -     test -d "$$am__dir" || $(MKDIR_P) "$$am__dir" || exit 1; \
    +     $(MKDIR_P) "$$am__dir" || exit 1; \

Sure. Thanks. -k