Update dtd to support <details> and <summary> in tests

Author: doxygen

testing/dtd/xhtml1-transitional.dtd

@@ -35,6 +35,7 @@
      - added picture tag
        - added source tag
      - adjusted possible children of a number of elements so they support the picture tag
+     - added details and summary tag
 -->
 
 <!--================ Character mnemonic entities =========================-->
@@ -211,7 +212,7 @@
 <!--=================== Text Elements ====================================-->
 
 <!ENTITY % special.extra
-   "object | applet | img | map | iframe | picture">
+   "object | applet | img | map | iframe | picture | details | summary">
 
 <!ENTITY % special.basic
 	"br | span | bdo">
@@ -252,7 +253,7 @@
 <!ENTITY % blocktext "pre | hr | blockquote | address | center | noframes">
 
 <!ENTITY % block
-    "p | %heading; | div | %lists; | %blocktext; | isindex |fieldset | table">
+    "p | %heading; | div | %lists; | %blocktext; | isindex |fieldset | table | details | summary">
 
 <!-- %Flow; mixes block and inline and is used for list items etc. -->
 <!ENTITY % Flow "(#PCDATA | %block; | form | %inline; | %misc; | picture)*">
@@ -446,6 +447,18 @@
   %TextAlign;
   >
 
+<!ELEMENT details %Flow;>  <!-- generic language/style container -->
+<!ATTLIST details
+  %attrs;
+  %TextAlign;
+  >
+
+<!ELEMENT summary %Flow;>  <!-- generic language/style container -->
+<!ATTLIST summary
+  %attrs;
+  %TextAlign;
+  >
+
 <!--=================== Paragraphs =======================================-->
 
 <!ELEMENT p %Inline;>