first usable version of kernel and commands

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

qa/lib/c/vseprint.c

@@ -0,0 +1,35 @@
+
+/*
+ * This file is part of the UCB release of Plan 9. It is subject to the license
+ * terms in the LICENSE file found in the top-level directory of this
+ * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
+ * part of the UCB release of Plan 9, including this file, may be copied,
+ * modified, propagated, or distributed except according to the terms contained
+ * in the LICENSE file.
+ */
+
+#include <u.h>
+#include <libc.h>
+void
+testvseprint(char *buf, int n, char *fmt, ...)
+{
+	va_list arg;
+
+	va_start(arg, fmt);
+	vseprint(buf, buf+n, fmt, arg);
+	va_end(arg);
+}
+
+void
+main(void)
+{
+	char buf[1024];
+	testvseprint(buf, sizeof(buf), "This is a really long message %d %d %d %d\n", 1, 2, 3, 4);
+	if (strcmp(buf, "This is a really long message 1 2 3 4\n")) {
+		print("FAIL\n");
+		exits("FAIL");
+	}
+
+	print("PASS\n");
+	exits("PASS");
+}