MHD_start_daemon(): reject invalid combinations of flags
MHD_start_daemon(): reject invalid combinations of flags

ghaderer/libmicrohttpd,ghaderer/libmicrohttpd,maru/libmicrohttpd-http2,maru/libmicrohttpd-http2,maru/libmicrohttpd-http2,ghaderer/libmicrohttpd