cmake LWS_HAVE_GETLOADAVG examples

warmcat/libwebsockets CMakeLists.txt :656 

CHECK_FUNCTION_EXISTS(getloadavg LWS_HAVE_GETLOADAVG)

c-jimenez/open-ocpp 3rdparty/libwebsockets/CMakeLists.txt :580 

CHECK_FUNCTION_EXISTS(getloadavg LWS_HAVE_GETLOADAVG)

fluffos/fluffos src/thirdparty/libwebsockets/CMakeLists.txt :563 

CHECK_FUNCTION_EXISTS(getloadavg LWS_HAVE_GETLOADAVG)