first usable version of kernel and commands

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

sys/include/keyboard.h

@@ -0,0 +1,65 @@
+#pragma src "/sys/src/libdraw"
+#pragma lib "libdraw.a"
+
+typedef struct 	Keyboardctl Keyboardctl;
+typedef struct	Channel	Channel;
+
+struct	Keyboardctl
+{
+	Channel	*c;	/* chan(Rune)[20] */
+
+	char		*file;
+	int		consfd;		/* to cons file */
+	int		ctlfd;		/* to ctl file */
+	int		pid;		/* of slave proc */
+};
+
+
+extern	Keyboardctl*	initkeyboard(char*);
+extern	int		ctlkeyboard(Keyboardctl*, char*);
+extern	void		closekeyboard(Keyboardctl*);
+
+enum {
+	KF=	0xF000,	/* Rune: beginning of private Unicode space */
+	Spec=	0xF800,
+	PF=	Spec|0x20,	/* num pad function key */
+	Kview=	Spec|0x00,	/* view (shift window up) */
+	/* KF|1, KF|2, ..., KF|0xC is F1, F2, ..., F12 */
+	Khome=	KF|0x0D,
+	Kup=	KF|0x0E,
+	Kdown=	Kview,
+	Kpgup=	KF|0x0F,
+	Kprint=	KF|0x10,
+	Kleft=	KF|0x11,
+	Kright=	KF|0x12,
+	Kpgdown=	KF|0x13,
+	Kins=	KF|0x14,
+
+	Kalt=	KF|0x15,
+	Kshift=	KF|0x16,
+	Kctl=	KF|0x17,
+
+	Kend=	KF|0x18,
+	Kscroll=	KF|0x19,
+	Kscrolloneup=	KF|0x20,
+	Kscrollonedown=	KF|0x21,
+
+	Ksoh=	0x01,
+	Kstx=	0x02,
+	Ketx=	0x03,
+	Keof=	0x04,
+	Kenq=	0x05,
+	Kack=	0x06,
+	Kbs=	0x08,
+	Knack=	0x15,
+	Ketb=	0x17,
+	Kdel=	0x7f,
+	Kesc=	0x1b,
+
+	Kbreak=	Spec|0x61,
+	Kcaps=	Spec|0x64,
+	Knum=	Spec|0x65,
+	Kmiddle=	Spec|0x66,
+	Kaltgr=	Spec|0x67,
+	Kmouse=	Spec|0x100,
+};