[horde] Trouble with Horde 4 Autoloader.php not found

[Luis Felipe Marzagao]

Hello: Warning: require_once(Horde/Core/Autoloader.php): failed to open 
stream: No such file or directory in /var/www/horde/lib/core.php on line 
40 Fatal error: require_once(): Failed opening required 
'Horde/Core/Autoloader.php' 
(include_path='/var/www/horde/lib:/var/www/horde/lib:.:/usr/share/php:/usr/share/pear') 
in /var/www/horde/lib/core.php on line 40ram

I have downloaded horde git snapshots (horde, framework, content, imp). 
After doing install procedures, I get the below message when trying to 
load horde/test.php:

Warning: require_once(Horde/Core/Autoloader.php): failed to open stream: 
No such file or directory in /var/www/horde/lib/core.php on line 40 
Fatal error: require_once(): Failed opening required 
'Horde/Core/Autoloader.php' 
(include_path='/var/www/horde/lib:/var/www/horde/lib:.:/usr/share/php:/usr/share/pear') 
in /var/www/horde/lib/core.php on line 40

The framework was installed through the bin/pear_batch_install and all 
seems to be installed under /usr/share/php, but I don't see a 
Core/Autoloader.php there:

duli at acer:~$ ls /usr/share/php/Horde/
Alarm           Exception.php   Memcache.php      Service
Alarm.php       Feed            Mime              SessionHandler
Argv            Feed.php        Mime.php          SessionHandler.php
Auth            File            Nls               SessionObjects.php
Auth.php        Form            Nls.php           Share
Autoloader      Form.php        Notification      Share.php
Autoloader.php  History         Notification.php  SpellChecker
Block           History.php     Oauth             SpellChecker.php
Block.php       Horde           Packaging         SQL
Browser         Http            Pdf               SQL.php
Browser.php     Http.php        Perms             Stream
Cache           Icalendar       Perms.php         Support
Cache.php       Icalendar.php   Prefs             Template.php
Cli.php         Image           Prefs.php         Test
Compress        Image.php       Queue             Text
Compress.php    Imap            Rdo               Thrift
Constraint      Injector        Rdo.php           Thrift.php
Constraint.php  Injector.php    Reflection        Token
Controller      Kolab           Reflection.php    Token.php
Controller.php  Kolab.php       Release           Tree
Crypt           Ldap            Release.php       Tree.php
Crypt.php       Ldap.php        Routes            Ui
Data            Lens            Rpc               Url.php
Data.php        Lens.php        Rpc.php           Vcs
DataTree        Lock            Scheduler         Vcs.php
DataTree.php    Lock.php        Scheduler.php     View
Date            Log             Scribe            View.php
Date.php        LoginTasks      Scribe.php        Xml
Db              LoginTasks.php  Secret            Yaml
Editor          Log.php         Secret.php        Yaml.php
Editor.php      Mail            Serialize
Exception       Mail.php        Serialize.php

What am I doing wrong?

Thanks a lot!

Luis Felipe