Add missing Id tags to all files under question, to help the unmerged files script.

question/exportfile.php

-<?php
+<?php  // $Id$
     require_once(dirname(__FILE__) . '/../config.php');
     require_once($CFG->libdir . '/filelib.php');
 

question/file.php

-<?php
+<?php  // $Id$
       // This script fetches files from the dataroot/questionattempt directory
       // It is based on the top-level file.php
       //

question/type/calculated/edit_calculated_form.php

-<?php
+<?php  // $Id$
 /**
  * Defines the editing form for the calculated question type.
  *

question/type/description/edit_description_form.php

-<?php
+<?php  // $Id$
 /**
  * Defines the editing form for the description question type.
  *

question/type/edit_question_form.php

-<?php
+<?php  // $Id$
 /**
  * A base class for question editing forms.
  *

question/type/essay/edit_essay_form.php

-<?php
+<?php  // $Id$
 /**
  * Defines the editing form for the essay question type.
  *

question/type/match/edit_match_form.php

-<?php
+<?php  // $Id$
 /**
  * Defines the editing form for the match question type.
  *

question/type/missingtype/edit_missingtype_form.php

-<?php
+<?php  // $Id$
 /**
  * Defines the editing form for the missingtype question type.
  *

question/type/multianswer/edit_multianswer_form.php

-<?php
+<?php  // $Id$
 /**
  * Defines the editing form for the multianswer question type.
  *

question/type/multichoice/edit_multichoice_form.php

-<?php
+<?php  // $Id$
 /**
  * Defines the editing form for the multichoice question type.
  *

question/type/numerical/edit_numerical_form.php

-<?php
+<?php  // $Id$
 /**
  * Defines the editing form for the numerical question type.
  *

question/type/numerical/questiontype.php

-<?php
+<?php  // $Id$
 /**
  * @version $Id$
  * @author Martin Dougiamas and many others. Tim Hunt.

question/type/numerical/simpletest/testquestiontype.php

-<?php
+<?php  // $Id$
 /**
  * Unit tests for (some of) question/type/numerical/questiontype.php.
  *

question/type/question.html

-<?php
+<?php  // $Id$
 /* This template determines the overall layout of a question. It is included by the 
  * print_question() method.
  */

question/type/random/edit_random_form.php

-<?php
+<?php  // $Id$
 /**
  * Defines the editing form for the random question type.
  *

question/type/randomsamatch/edit_randomsamatch_form.php

-<?php
+<?php  // $Id$
 /**
  * Defines the editing form for the randomsamatch question type.
  *

question/type/shortanswer/edit_shortanswer_form.php

-<?php
+<?php  // $Id$
 /**
  * Defines the editing form for the shortanswer question type.
  *

question/type/shortanswer/simpletest/testquestiontype.php

-<?php
+<?php  // $Id$
 /**
  * Unit tests for (some of) question/type/shortanswer/questiontype.php.
  *

question/type/truefalse/edit_truefalse_form.php

-<?php
+<?php  // $Id$
 require_once($CFG->dirroot.'/question/type/edit_question_form.php');
 /**
  * Defines the editing form for the thruefalse question type.