Update compiler to 4.9 in travis environment
Update compiler to 4.9 in travis environment

chyla/slas,chyla/slas,chyla/slas,chyla/pat-lms,chyla/slas,chyla/slas,chyla/slas,chyla/pat-lms,chyla/pat-lms,chyla/pat-lms,chyla/pat-lms,chyla/slas,chyla/pat-lms,chyla/pat-lms