Fixning compiler warnings. Fixing build failure for valgrind platform.

include/my_global.h:
  Moving YESNO() macro here from log.cc (it prints either "yes" or "no" depending on a boolean value).
sql/log.cc:
  Moving YESNO() function to my_global.h.
sql/sql_class.cc:
  Adding default case to printout function to avoid warning.
  Only defining function for debug builds since it isn't used 
  in non-debug build (hence produce a warning).
sql/sql_class.h:
  Printing yes/no answer instead of memory address since the
  case produces an error/warning on valgrind platform.

include/my_global.h

@@ -1130,6 +1130,9 @@ typedef char		bool;	/* Ordinary boolean values 0 1 */
 #define dbug_volatile
 #endif
 
+/* Some helper macros */
+#define YESNO(X) ((X) ? "yes" : "no")
+
 /* Defines for time function */
 #define SCALE_SEC	100
 #define SCALE_USEC	10000

sql/log.cc

@@ -1448,8 +1448,6 @@ static int binlog_prepare(handlerton *hton, THD *thd, bool all)
   return 0;
 }
 
-#define YESNO(X) ((X) ? "yes" : "no")
-
 /**
   This function is called once after each statement.
 

sql/sql_class.cc

@@ -3528,22 +3528,24 @@ int THD::binlog_flush_pending_rows_event(bool stmt_end)
 }
 
 
+#ifndef DBUG_OFF
 static const char *
 show_query_type(THD::enum_binlog_query_type qtype)
 {
   switch (qtype) {
+    static char buf[64];
   case THD::ROW_QUERY_TYPE:
     return "ROW";
   case THD::STMT_QUERY_TYPE:
     return "STMT";
   case THD::MYSQL_QUERY_TYPE:
     return "MYSQL";
-  }
-
-  static char buf[64];
+  default:
     sprintf(buf, "UNKNOWN#%d", qtype);
     return buf;
+  }
 }
+#endif
 
 
 /*

sql/sql_class.h

@@ -2100,8 +2100,8 @@ public:
       Don't reset binlog format for NDB binlog injector thread.
     */
     DBUG_PRINT("debug",
-               ("temporary_tables: %d, in_sub_stmt: %d, system_thread: %s",
-                (int) temporary_tables, in_sub_stmt,
+               ("temporary_tables: %s, in_sub_stmt: %s, system_thread: %s",
+                YESNO(temporary_tables), YESNO(in_sub_stmt),
                 show_system_thread(system_thread)));
     if ((temporary_tables == NULL) && (in_sub_stmt == 0) &&
         (system_thread != SYSTEM_THREAD_NDBCLUSTER_BINLOG))