Fix arrow keys terminfo capabilities

Usually the arrow keys generate the ANSI sequence which terminal will
understand like a movement, so it is not necessary any dealing for them, the
program can not know if the sequence is generate for a echo key or directly
from the program. If you need really know if the key was pressed then you
need activate the keypad mode where the keys will generate a special code
for each keypad key.

The terminfo capabilities kcub1, kcud1, kcuf1 and kcuu1 are used for this
keypad code, not for the sequence generate in the ansi mode.
---
 st.info |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

st.info

@@ -50,10 +50,10 @@ st| simpleterm,
 	is2=\E[4l\E>,
 	it#8,
 	kbs=\177,
-	kcub1=\E[D,
-	kcud1=\E[B,
-	kcuf1=\E[C,
-	kcuu1=\E[A,
+	kcub1=\EOD,
+	kcud1=\EOB,
+	kcuf1=\EOC,
+	kcuu1=\EOA,
 	kLFT=\E[d,
 	kRIT=\E[c,
 	kind=\E[a,