pad noticed bigger runes mean that things don't line up again.
fix that.
we need strlen("x10ffff") runes to collect latin1 sequences.

Reference: /n/atom/patch/applied/collectlen
Date: Fri Jun 20 14:08:17 CES 2014
Signed-off-by: quanstro@quanstro.net

--- /sys/src/nix/port/devpckb.c	Fri Jun 20 14:07:31 2014
+++ /sys/src/nix/port/devpckb.c	Fri Jun 20 14:07:31 2014
@@ -59,7 +59,7 @@
 	int	lastc;
 	int	collecting;
 	int	nk;
-	Rune	kc[5];
+	Rune	kc[7];			/* strlen("x10ffff") */
 	int	buttons;
 	void	(*msg)(char*);
 };
--- /sys/src/nix/port/devpckb.c	Fri Jun 20 14:07:33 2014
+++ /sys/src/nix/port/devpckb.c	Fri Jun 20 14:07:33 2014
@@ -59,7 +59,7 @@
 	int	lastc;
 	int	collecting;
 	int	nk;
-	Rune	kc[5];
+	Rune	kc[7];			/* strlen("x10ffff") */
 	int	buttons;
 	void	(*msg)(char*);
 };