message: Added safeguard for installing to /usr/local
diff: @@ -4,6 +4,13 @@ project( EOSIO )
  enable_testing()
  +if (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
  + message(WARNING "CMAKE_INSTALL_PREFIX is set to default path of ${CMAKE_INSTALL_PREFIX}, resetting to ${CMAKE_INSTALL_PREFIX}/eosio")
  + set(CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}/eosio")
  +elseif ("${CMAKE_INSTALL_PREFIX}" STREQUAL "/usr/local")
  + message(WARNING "CMAKE_INSTALL_PREFIX is explicitly set to /usr/local. This is not recommended.")
  +endif()
  +
  list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/libraries/fc/CMakeModules")
  list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMakeModules")
  