message: Use move -pv on Travis
diff: @@ -6,7 +6,7 @@ HERE=$PWD
  # Override gcc version to $GCC_VER.
  # Put an appropriate symlink at the front of the path.
  -mkdir -v $HOME/bin
  +mkdir -pv $HOME/bin
  for g in gcc g++ gcov gcc-ar gcc-nm gcc-ranlib
  do
  test -x $( type -p ${g}-$GCC_VER )
  