Issue 13160: Rename install_dist to install (original) (raw)

When we first added actions to pysetup, the install command was renamed to install_dist to avoid a name conflict between the install command and the install action. Later, the run action was introduced and now serves to namespace all commands. Thus, we have no conflict anymore. I would like to restore the original name of the install command, for distutils compat: people used to d1 build/install will get the same name, and the section in config files (which are currently compatible with d1 and d2, except for install_dist) will share the same name again (letting people give options in [install], not [install] and [install_dist]).