Calling i18n.inc but there is none

After following all the steps of install.txt i get the following errors:

WITHOUT ACTIVATING THE i18n MODULE:

Warning: main(modules/i18n/i18n.inc): failed to open stream: No such file or directory in /(...)/includes/conf.php on line 53

Warning: main(): Failed opening 'modules/i18n/i18n.inc' for inclusion (include_path='.:/usr/share/php:/usr/share/pear') in /(...)/includes/conf.php on line 53

Followed by the Drupal, apparently functional.

ACTIVATING THE i18n MODULE:

Warning: main(modules/i18n/i18n.inc): failed to open stream: No such file or directory in /(...)/includes/conf.php on line 53

Warning: main(): Failed opening 'modules/i18n/i18n.inc' for inclusion (include_path='.:/usr/share/php:/usr/share/pear') in /(...)/includes/conf.php on line 53

Only this, no more drupal below.

It's true that no i18n.inc is found under modules/i18n/, I haven't found it in the downloaded tar.gz. There is only a i18n_node.inc.

Renaming i18n_node.inc to i18n.inc make the messages disappear ant the i18n can be activated then and apparently it works. But then in the logs these messages appear:

warning: _i18n_init(modules/i18n/i18n_node.inc): failed to open stream: No such file or directory in /(...)/modules/i18n/i18n.module on line 67.

warning: _i18n_init(): Failed opening 'modules/i18n/i18n_node.inc' for inclusion (include_path='.:/usr/share/php:/usr/share/pear') in /(...)/modules/i18n/i18n.module on line 67.