Try bad captures before non-captures

Consider sligtly negative captures as good if at low
depth and far from beta.

After 999 games at 1+0
Mod vs Orig +169 =694 -136  +11 ELO

Signed-off-by: Marco Costalba <mcostalba@gmail.com>

src/search.cpp

@@ -1440,7 +1440,7 @@ namespace {
     // Loop through all legal moves until no moves remain or a beta cutoff occurs
 
     // Initialize a MovePicker object for the current position
-    MovePicker mp = MovePicker(pos, ttMove, depth, H, &ss[ply]);
+    MovePicker mp = MovePicker(pos, ttMove, depth, H, &ss[ply], beta);
     CheckInfo ci(pos);
 
     while (   bestValue < beta