change --html to make sure we use the HTML serialization rule by default

* xmllint.c: change --html to make sure we use the HTML serialization
  rule by default when HTML parser is used, add --xmlout to allow to
  force the XML serializer on HTML.
* HTMLtree.c: ugly tweak to fix the output on <p> element and
  solve #125093
* result/HTML/*: this changes the output of some tests
Daniel
diff --git a/result/HTML/fp40.htm b/result/HTML/fp40.htm
index 501eb61..e78b8bd 100644
--- a/result/HTML/fp40.htm
+++ b/result/HTML/fp40.htm
@@ -30,9 +30,7 @@
 <p>This section provides complementary or late-breaking 
 information to supplement the Microsoft FrontPage Server Extensions documentation.</p>
 
-<p>
-<a href="#apache">Apache 1.3.4 Support</a><br><a href="#upgrading">Upgrading from previous version of FrontPage Server Extensions</a><br><a href="#executables">Uploading files into executable folders</a>
-</p>
+<p><a href="#apache">Apache 1.3.4 Support</a><br><a href="#upgrading">Upgrading from previous version of FrontPage Server Extensions</a><br><a href="#executables">Uploading files into executable folders</a></p>
 
 
 <p align="right"><font size="1"><a href="#top">Top of Page</a></font></p>
@@ -106,9 +104,7 @@
 <p>This section lists sources of more information about the
 FrontPage Server Extensions.</p>
 
-<p>
-<a href="#serk">Server Extensions Resource Kit</a><br><a href="#serkupdate">Server Extensions Resource Kit Update</a><br><a href="#kb">Knowledge Base</a>
-</p>
+<p><a href="#serk">Server Extensions Resource Kit</a><br><a href="#serkupdate">Server Extensions Resource Kit Update</a><br><a href="#kb">Knowledge Base</a></p>
 
 
 <p align="right"><font size="1"><a href="#top">Top of Page</a></font></p>