Fix isalnum not depending of the locale
Fix isalnum not depending of the locale

Change-Id: I89963a21b18765aa2fafe2d14a3868dbf98162ae
Reviewed-on: http://gerrit.aldebaran.lan:8080/14837
Reviewed-by: cgestes <ddb78fe00abb42f91254c16a0860e38eb0781789@aldebaran-robotics.com>
Reviewed-by: vpaleologue <cb19838a79eb484e12a6960acfbf7c16dfdb80d9@aldebaran-robotics.com>
Tested-by: jfremy <881af4a2323c7009e14d70316b78f8b33c542490@aldebaran-robotics.com>

aldebaran/libqi,aldebaran/libqi,aldebaran/libqi,vbarbaresi/libqi,bsautron/libqi