added make_unique function to help quickly create unique pointer. (#456)
added make_unique function to help quickly create unique pointer. (#456)

Migrate to std::make_unique when C++14 available

wanglei828/apollo,ApolloAuto/apollo,jinghaomiao/apollo,ApolloAuto/apollo,wanglei828/apollo,ApolloAuto/apollo,xiaoxq/apollo,ycool/apollo,ApolloAuto/apollo,ycool/apollo,ycool/apollo,xiaoxq/apollo,wanglei828/apollo,ApolloAuto/apollo,jinghaomiao/apollo,xiaoxq/apollo,ApolloAuto/apollo,jinghaomiao/apollo,xiaoxq/apollo,jinghaomiao/apollo,ycool/apollo,jinghaomiao/apollo,wanglei828/apollo,wanglei828/apollo,jinghaomiao/apollo,wanglei828/apollo,ycool/apollo,xiaoxq/apollo,xiaoxq/apollo,ycool/apollo