paalied patch from Julio M. Merino Vidal fixing bug #134751 to fix

* configure.in doc/Makefile.am include/libxml/Makefile.am:
  paalied patch from Julio M. Merino Vidal fixing bug #134751
  to fix --with-html-dir option.
* doc/*: rebuilt fully the docs
* doc/html/libxml-xmlsave.html: new file from new header.
Daniel
diff --git a/doc/APIchunk13.html b/doc/APIchunk13.html
index 1abf76b..a1ce710 100644
--- a/doc/APIchunk13.html
+++ b/doc/APIchunk13.html
@@ -311,6 +311,7 @@
 <a href="html/libxml-hash.html#xmlHashScannerFull">xmlHashScannerFull</a><br />
 <a href="html/libxml-relaxng.html#xmlRelaxNGValidateFullElement">xmlRelaxNGValidateFullElement</a><br />
 <a href="html/libxml-relaxng.html#xmlRelaxNGValidatePushElement">xmlRelaxNGValidatePushElement</a><br />
+<a href="html/libxml-xmlsave.html#xmlSaveDoc">xmlSaveDoc</a><br />
 <a href="html/libxml-debugXML.html#xmlShellPwd">xmlShellPwd</a><br />
 <a href="html/libxml-tree.html#xmlSplitQName2">xmlSplitQName2</a><br />
 <a href="html/libxml-tree.html#xmlSplitQName3">xmlSplitQName3</a><br />