backporte some bugfixes from trunk intp QA_2_10:

- bug #1567317 [sqp] Syntax highlighter: extra spaces
- bug #1239401 [sqp] table dot numeric field name
- bug #1672789 [sqp] Undefined offset: 4 in sqlparser.lib.php #1674
- bug #1682044 [export] Export file even if file not selected
- bug #1664212 querywindow loses url encoded characters
+ [config] clean cookies on phpMyAdmin upgrade
- bug #1674972 [export] no export with %afm%
- bug #1667887 HTML maxlength
- bug #1679055 #1050 - Table '<table name>' already exists

querywindow.php

@@ -172,11 +172,11 @@ if ( ! empty( $query_history_latest ) && ! empty( $query_history_latest_db ) ) {
         'table' => isset($query_history_latest_table) ? $query_history_latest_table : '',
     );
 
-    $sql_query = urldecode($query_history_latest);
+    $sql_query = $query_history_latest;
     $db = $query_history_latest_db;
     $table = $query_history_latest_table;
 } elseif ( ! empty( $query_history_latest ) ) {
-    $sql_query = urldecode($query_history_latest);
+    $sql_query = $query_history_latest;
 }
 
 if (isset($sql_query)) {
@@ -310,7 +310,7 @@ if ( count( $_sql_history ) > 0
                . htmlspecialchars( $query['table'] ) . '\';'
                .' document.getElementById(\'hiddenqueryform\').submit();'
                .' return false;">[' . htmlspecialchars( $query['db'] ) . '] '
-               . urldecode( $sql ) . '</a>' . "\n";
+               . htmlspecialchars($sql) . '</a>' . "\n";
 
         echo '</li>' . "\n";
     }