Revert the changeset for Bug#16144 "mysql_stmt_attr_get type error":

it breaks binary compatibility. The patch will be left intact
in 5.1.

libmysql/libmysql.c

@@ -2733,7 +2733,7 @@ my_bool STDCALL mysql_stmt_attr_get(MYSQL_STMT *stmt,
 {
   switch (attr_type) {
   case STMT_ATTR_UPDATE_MAX_LENGTH:
-    *(my_bool*) value= stmt->update_max_length;
+    *(unsigned long *) value= stmt->update_max_length;
     break;
   default:
     return TRUE;

tests/mysql_client_test.c

@@ -11784,25 +11784,6 @@ static void test_bug12925()
 }
 
 
-/* Bug #16144: mysql_stmt_attr_get type error */
-
-static void test_bug16144()
-{
-  const my_bool flag_orig= (my_bool) 0xde;
-  my_bool flag= flag_orig;
-  MYSQL_STMT *stmt;
-  myheader("test_bug16144");
-
-  /* Check that attr_get returns correct data on little and big endian CPUs */
-  stmt= mysql_stmt_init(mysql);
-  mysql_stmt_attr_set(stmt, STMT_ATTR_UPDATE_MAX_LENGTH, (const void*) &flag);
-  mysql_stmt_attr_get(stmt, STMT_ATTR_UPDATE_MAX_LENGTH, (void*) &flag);
-  DIE_UNLESS(flag == flag_orig);
-
-  mysql_stmt_close(stmt);
-}
-
-
 /*
   Bug #15613: "libmysqlclient API function mysql_stmt_prepare returns wrong
   field length"
@@ -12089,7 +12070,6 @@ static struct my_tests_st my_tests[]= {
   { "test_bug12001", test_bug12001 },
   { "test_bug11718", test_bug11718 },
   { "test_bug12925", test_bug12925 },
-  { "test_bug16144", test_bug16144 },
   { "test_bug15613", test_bug15613 },
   { 0, 0 }
 };