Let material probing to access per-thread table

It is up to material (and pawn) table look up
code to know where the per-thread tables are,
so change API to reflect this.

Also some comment fixing while there

No functional change.

src/evaluate.cpp

@@ -19,6 +19,7 @@
 
 #include <algorithm>
 #include <cassert>
+#include <cstring>   // For std::memset
 #include <iomanip>
 #include <sstream>
 
@@ -26,7 +27,6 @@
 #include "evaluate.h"
 #include "material.h"
 #include "pawns.h"
-#include "thread.h"
 
 namespace {
 
@@ -677,7 +677,6 @@ namespace {
 
     EvalInfo ei;
     Score score, mobility[2] = { SCORE_ZERO, SCORE_ZERO };
-    Thread* thisThread = pos.this_thread();
 
     // Initialize score by reading the incrementally updated scores included
     // in the position object (material + piece square tables).
@@ -685,7 +684,7 @@ namespace {
     score = pos.psq_score();
 
     // Probe the material hash table
-    ei.mi = Material::probe(pos, thisThread->materialTable, thisThread->endgames);
+    ei.mi = Material::probe(pos);
     score += ei.mi->imbalance();
 
     // If we have a specialized evaluation function for the current material
@@ -694,7 +693,7 @@ namespace {
         return ei.mi->evaluate(pos);
 
     // Probe the pawn hash table
-    ei.pi = Pawns::probe(pos, thisThread->pawnsTable);
+    ei.pi = Pawns::probe(pos);
     score += apply_weight(ei.pi->pawns_score(), Weights[PawnStructure]);
 
     // Initialize attack and king safety bitboards