Split installation targets into install-bin and install-doc.
install-bin will only install the program, and install-doc will install
the documentation. The main install target still installs both.
(the addremove command is deprecated; use add and remove --after instead)
adding dir/bar
adding foo
dir/bar
foo
(the addremove command is deprecated; use add and remove --after instead)
adding dir/bar_2
adding foo_2
dir/bar_2
foo_2