first usable version of kernel and commands

After an year of hard work, this is a first "usable" version of Jehanne.

sys/src/lib/authsrv/_asrequest.c

@@ -0,0 +1,16 @@
+#include <u.h>
+#include <libc.h>
+#include <authsrv.h>
+
+int
+_asrequest(int fd, Ticketreq *tr)
+{
+	char trbuf[TICKREQLEN];
+	int n;
+
+	n = convTR2M(tr, trbuf, sizeof(trbuf));
+	if(write(fd, trbuf, n) != n)
+		return -1;
+
+	return 0;
+}