Hi. Achim, Thank you for your kind explanations. I learned a lot from you :)
> I opted for this behaviour to align more closely to GNU convention and to > avoid any surprising behaviour, but it is easy to make the default target > "all" instead of "help". I think many Org users are familiar to the previous installation procedure by "make" not "make all", and some users wrote it in their blog, Org manual [*1] too. Don't you think this change has a wide impact for them? But it's just a concern to me :) [*1] http://orgmode.org/manual/Installation.html
