message: Build: Set minimum Boost version to 1.57.0
diff: @@ -926,7 +926,7 @@ fi
  if test x$use_boost = xyes; then
  dnl Minimum required Boost version
  -define(MINIMUM_REQUIRED_BOOST, 1.47.0)
  +define(MINIMUM_REQUIRED_BOOST, 1.57.0)
  dnl Check for boost libs
  AX_BOOST_BASE([MINIMUM_REQUIRED_BOOST])
  