Fix language guess code when LANG is set to POSIX or C,
Fix language guess code when LANG is set to POSIX or C,

Thanks to Thorsten Röder for pointing me to this issue!

CCMAIL:thorsten.roeder@weihenstephan.org

svn path=/trunk/KDE/kdeedu/marble/; revision=709817

adraghici/marble,tucnak/marble,quannt24/marble,probonopd/marble,adraghici/marble,tucnak/marble,oberluz/marble,rku/marble,probonopd/marble,adraghici/marble,quannt24/marble,rku/marble,probonopd/marble,oberluz/marble,tucnak/marble,AndreiDuma/marble,probonopd/marble,David-Gil/marble-dev,quannt24/marble,AndreiDuma/marble,rku/marble,David-Gil/marble-dev,tucnak/marble,probonopd/marble,tzapzoor/marble,tzapzoor/marble,probonopd/marble,adraghici/marble,Earthwings/marble,utkuaydin/marble,oberluz/marble,tzapzoor/marble,tzapzoor/marble,David-Gil/marble-dev,AndreiDuma/marble,David-Gil/marble-dev,utkuaydin/marble,rku/marble,utkuaydin/marble,Earthwings/marble,tzapzoor/marble,oberluz/marble,probonopd/marble,adraghici/marble,tucnak/marble,quannt24/marble,AndreiDuma/marble,rku/marble,tucnak/marble,quannt24/marble,utkuaydin/marble,AndreiDuma/marble,Earthwings/marble,rku/marble,quannt24/marble,oberluz/marble,adraghici/marble,utkuaydin/marble,quannt24/marble,Earthwings/marble,tzapzoor/marble,AndreiDuma/marble,David-Gil/marble-dev,David-Gil/marble-dev,oberluz/marble,tzapzoor/marble,tucnak/marble,Earthwings/marble,Earthwings/marble,utkuaydin/marble,tzapzoor/marble