added system util functions
added system util functions

oas89/iktomi,oas89/iktomi,SlivTime/iktomi,Lehych/iktomi,SlivTime/iktomi,Lehych/iktomi,boltnev/iktomi,boltnev/iktomi,SmartTeleMax/iktomi,SmartTeleMax/iktomi,SmartTeleMax/iktomi,SlivTime/iktomi,Lehych/iktomi,oas89/iktomi,boltnev/iktomi