[core] Remove config data from session as it brings chicken-egg problem.

Configuration data stores PmaAbsoluteUri, which should be accessible
before initiating session. Otherwise there is no way to make
PmaAbsoluteUri work. PmaAbsoluteUri is needed at least for reverse
proxy setups, for example http webserver running behind https proxy.

user_password.php

@@ -21,7 +21,7 @@
  * @uses    PMA_generate_common_url()
  * @uses    PMA_isValid()
  * @uses    PMA_mysqlDie()
- * @uses    PMA_setCookie()
+ * @uses    $GLOBALS['PMA_Config']->setCookie()
  * @uses    PMA_blowfish_encrypt()
  * @uses    PMA_showMessage()
  * @uses    define()
@@ -96,7 +96,7 @@ if (isset($_REQUEST['nopass'])) {
         // Changes password cookie if required
         // Duration = till the browser is closed for password (we don't want this to be saved)
         if ($cfg['Server']['auth_type'] == 'cookie') {
-            PMA_setCookie('pmaPass-' . $server,
+            $GLOBALS['PMA_Config']->setCookie('pmaPass-' . $server,
                 PMA_blowfish_encrypt($password, $GLOBALS['cfg']['blowfish_secret']));
         } // end if