rebase First try to make use of uIP for sending syslog

udp_apps.c

@@ -0,0 +1,17 @@
+
+#include "stdint.h"
+#include "udp_apps.h"
+
+static uint8_t callbacknr;
+
+void udp_callbacks(void)
+{
+	// Calling more than one callback from the same UIP_UDP_APPCALL does not work; we use a simple dispatcher
+	if (callbacknr == 0) {
+		dhcp_callback();
+		callbacknr = 1;
+	} else  {
+		syslog_callback();
+		callbacknr = 0;
+	}
+}