- added commands --query_vertical and --query_horisontal to client/mysqltest.cc

- get my_strtod to return inf
- get Field_float::store(double) and Field_double::store(float) to set null for 
nan value 
(as extra serg's recomendations to fix for patch on 
 Bug #2082 'mysqldump converts "inf" to null')

strings/strtod.c

@@ -93,7 +93,7 @@ double my_strtod(const char *str, char **end)
         if (neg)
           result= 0.0;
         else
-          result= DBL_MAX;
+          result= DBL_MAX*10;
         goto done;
       }
       while (exp >= 100)
@@ -113,9 +113,6 @@ done:
   if (end)
     *end = (char *)str;
 
-  if (isinf(result))
-    result=DBL_MAX;
-
   return negative ? -result : result;
 }