travis.rb: use opt_prefix for macdeployqt which is alway symlinked to the current qts prefix (if I dont mess up the cache creation)
travis.rb: use opt_prefix for macdeployqt which is alway symlinked to the current qts prefix (if I dont mess up the cache creation)

kamilion/starcheat,chrmoritz/starcheat,wizzomafizzo/starcheat,R2pChyou/starcheat,wizzomafizzo/starcheat,chrmoritz/starcheat,R2pChyou/starcheat,kamilion/starcheat