first usable version of kernel and commands

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

sys/include/complete.h

@@ -0,0 +1,25 @@
+/*
+ * 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.
+ */
+
+#pragma	lib	"libcomplete.a"
+#pragma src "/sys/src/libcomplete"
+
+typedef struct Completion Completion;
+
+struct Completion{
+	uint8_t advance;		/* whether forward progress has been made */
+	uint8_t complete;	/* whether the completion now represents a file or directory */
+	char *string;		/* the string to advance, suffixed " " or "/" for file or directory */
+	int nmatch;		/* number of files that matched */
+	int nfile;			/* number of files returned */
+	char **filename;	/* their names */
+};
+
+Completion* complete(char *dir, char *s);
+void freecompletion(Completion*);