message: add EOS as the default token
diff: @@ -181,7 +181,7 @@ endif()
  add_subdirectory( externals )
  if ("${CORE_SYMBOL_NAME}" STREQUAL "")
  - set( CORE_SYMBOL_NAME "SYS" )
  + set( CORE_SYMBOL_NAME "EOS" )
  endif()
  string(TOUPPER ${CORE_SYMBOL_NAME} CORE_SYMBOL_NAME)
  