[TYPO3-english] Access permissions problem

[Ph. Ivaldi]

Hello,

I am in a local development environment and I develop a php library
pi-google-maps-api under svn control which I use in my own TYPO3
extension.

All is right with version 4.3.0 and 4.3.1 when the lib has owner
and group www-data set by this command:
$ chown -R www-data\: /[...]/typo3conf/ext/pi_annuaire/googlemapsapi/pi-google-maps-api

If the library has owner www-data and group pi…
$ chown -R www-data:pi /[...]/typo3conf/ext/pi_annuaire/googlemapsapi/pi-google-maps-api
…all is right with the version 4.3.0 but I obtain a "Failed opening required"
with the 4.3.1.

For information:
8<------8<------8<------8<------8<------8<------8<------8<------8<------
namei -l /var/www/guideregional/typo3conf/ext/pi_annuaire/googlemapsapi/pi-google-maps-api/GoogleMapsAPI.class.php
f: /var/www/guideregional/typo3conf/ext/pi_annuaire/googlemapsapi/pi-google-maps-api/GoogleMapsAPI.class.php
drwxr-xr-x root     root     /
drwxr-xr-x root     root     var
drwxrwxr-x www-data www-data www
drwxrwxr-x www-data www-data guideregional
drwxrwxr-x www-data www-data typo3conf
drwxrwxr-x www-data www-data ext
drwxrwxr-x www-data www-data pi_annuaire
drwxrwxr-x www-data www-data googlemapsapi
drwxrwxr-x www-data pi       pi-google-maps-api
-rw-rw-r-- www-data pi       GoogleMapsAPI.class.php
8<------8<------8<------8<------8<------8<------8<------8<------8<------

How can I work with my library as group pi under TYPO3 V4.3.1 ?
It's a bug or a feature ?

Thanks,
-- 
   Philippe Ivaldi.
http://www.piprime.fr/