Coding Standards in Drupal Core,

Hi,

I had happened to install coder module in Drupal 7 and found some Coding standard Errors in Drupal Core modules and i am very much suprised. Can anyone explain how it can happen because Drupal allows us to Contribute a module only if it meets the standard but some of its own core is not of standard as per the coder module. I will give you some examples which i got

authorize.php
severity: normal
Line 44: The $title argument to drupal_set_title() should be enclosed within t() so that it is translatable.
drupal_set_title('Access denied');

update.php
severity: normal
Line 34: The $title argument to drupal_set_title() should be enclosed within t() so that it is translatable.
drupal_set_title('Drupal database update');

severity: critical
Line 66: Potential problem: FAPI elements '#title' and '#description' only accept filtered text, be sure to use check_plain(),
filter_xss() or similar to ensure your $variable is fully sanitized.
'#title' => $module . ' module',

includes/filetransfer/filetransfer.inc
filetransfer.inc
severity: normal
Line -1: @file block missing (Drupal Docs)

modules/poll/poll.module
poll.module
severity: critical
Line 397: Potential problem: FAPI elements '#title' and '#description' only accept filtered text, be sure to use check_plain(),
filter_xss() or similar to ensure your $variable is fully sanitized.
'#title' => $value !== '' ? t('Choice label') : t('New choice label'),

user.module
severity: critical
Line 1084: Potential problem: FAPI elements '#title' and '#description' only accept filtered text, be sure to use check_plain(), filter_xss() or similar to ensure your $variable is fully sanitized.
'#description' => $current_pass_description,

severity: critical
Line 1122: Potential problem: FAPI elements '#title' and '#description' only accept filtered text, be sure to use check_plain(), filter_xss() or similar to ensure your $variable is fully sanitized.
'#title' => $roles[DRUPAL_AUTHENTICATED_RID],

Thank you,

regards,
Anthony Adaikalaraj.A