message: fix_style.sh: accept astyle 3.0.1
diff: ASTYLE_VER_REQUIRED_1="Artistic Style Version 2.05.1"
  ASTYLE_VER_REQUIRED_2="Artistic Style Version 2.06"
  ASTYLE_VER_REQUIRED_3="Artistic Style Version 3.0"
  +ASTYLE_VER_REQUIRED_4="Artistic Style Version 3.0.1"
  +
  +astyle_ver() {
  + echo "At least ${ASTYLE_VER_REQUIRED_1} is required"
  + echo "You can get the correct version here: https://sourceforge.net/projects/astyle/files/astyle/astyle%202.06/"
  +}
  +
  +# check if astyle is installed
  +condition=$(which astyle 2>/dev/null | grep -v "not found" | wc -l)
  +if [ $condition -eq 0 ]; then
  + echo "astyle is not installed"
  + astyle_ver
  + exit 1
  +else
  ASTYLE_VER=`astyle --version`
  +
  if [ "$ASTYLE_VER" != "$ASTYLE_VER_REQUIRED_1" -a \
  "$ASTYLE_VER" != "$ASTYLE_VER_REQUIRED_2" -a \
  - "$ASTYLE_VER" != "$ASTYLE_VER_REQUIRED_3" ];
  + "$ASTYLE_VER" != "$ASTYLE_VER_REQUIRED_3" -a \
  + "$ASTYLE_VER" != "$ASTYLE_VER_REQUIRED_4" ];
  then
  echo "Error: you're using ${ASTYLE_VER}"
  echo "but should be using ${ASTYLE_VER_REQUIRED} instead"
  exit 1
  fi
  +fi
  # Check that exactly one directory is given
  if [ $# -eq 0 ];
  