message: Fix .travis.yml
  [skip appveyor]
diff: language: cpp
  -sudo: false
  -
  stages:
  - checks
  - tests
  @@ -370,10 +368,10 @@ script:
  # Compiler
  - if [ $MPI == "YES" ]; then
  export MYCXX=mpic++;
  - export MAKE_CXX_FLAG=MPICXX=$MYCXX
  + export MAKE_CXX_FLAG=MPICXX=$MYCXX;
  else
  export MYCXX="$CXX";
  - export MAKE_CXX_FLAG=CXX=$MYCXX
  + export MAKE_CXX_FLAG=CXX=$MYCXX;
  fi
  # Print the compiler version
  