#595469 - Fix crash when removing gconf keys
#588196 - Check for libusb preprocessor macros with #if defined (Aurelien Jarno)
#514007 - Remove executable permission from l10n.txt and legal.xml
Misc. updates / fixes:
- Fix mai.po file permission
New and updated translations:
[ca] Gil Forcada
[cs] Petr Kovar
[or] Manoj Kumar Giri
[ru] Leonid Kanter
