enable queue management in kern/devmouse.c. i have no idea why it was

disabled.

this caused scroll button movements to be missed from /dev/mouse as they
generate two quick on-off events of which only the last one was being read
by devmouse.

andrey

kern/devmouse.c

@@ -8,7 +8,7 @@
 #include	"memdraw.h"
 #include	"screen.h"
 
-int	mousequeue;
+int	mousequeue = 1;
 
 Mouseinfo	mouse;
 Cursorinfo	cursor;