Add ICU dependency to travis build
Add ICU dependency to travis build

pmprog/OpenApoc,FranciscoDA/OpenApoc,ShadowDancer/OpenApoc,agry/x-com,FranciscoDA/OpenApoc,steveschnepp/OpenApoc,FranciscoDA/OpenApoc,AndO3131/OpenApoc,agry/x-com,steveschnepp/OpenApoc,Istrebitel/OpenApoc,pmprog/OpenApoc,AndO3131/OpenApoc,AndO3131/OpenApoc,Istrebitel/OpenApoc,agry/x-com,ShadowDancer/OpenApoc