hack based on Arjan van de Ven suggestion to reduce ELF footprint and

* elfgcchack.h doc/elfgcchack.xsl libxml.h: hack based on Arjan van de
  Ven suggestion to reduce ELF footprint and generated code. Based on
  aliasing of libraries function to generate direct call instead of
  indirect ones
* doc/libxml2-api.xml doc/Makefile.am doc/apibuild.py: added automatic
  generation of elfgcchack.h based on the API description, extended
  the API description to show the conditionals configuration flags
  required for symbols.
* nanohttp.c parser.c xmlsave.c include/libxml/*.h: lot of cleanup
* doc/*: regenerated the docs.
Daniel
diff --git a/doc/APIchunk0.html b/doc/APIchunk0.html
index ca16cf1..9398dc9 100644
--- a/doc/APIchunk0.html
+++ b/doc/APIchunk0.html
@@ -130,6 +130,7 @@
 <a href="html/libxml-parser.html#xmlCtxtUseOptions">xmlCtxtUseOptions</a><br />
 <a href="html/libxml-uri.html#xmlNormalizeURIPath">xmlNormalizeURIPath</a><br />
 </dd><dt>Apply</dt><dd><a href="html/libxml-schemasInternals.html#XML_SCHEMAS_ANYATTR_STRICT">XML_SCHEMAS_ANYATTR_STRICT</a><br />
+<a href="html/libxml-schemasInternals.html#XML_SCHEMAS_ANY_STRICT">XML_SCHEMAS_ANY_STRICT</a><br />
 </dd><dt>Arabic</dt><dd><a href="html/libxml-xmlunicode.html#xmlUCSIsArabic">xmlUCSIsArabic</a><br />
 </dd><dt>ArabicPresentationForms-A</dt><dd><a href="html/libxml-xmlunicode.html#xmlUCSIsArabicPresentationFormsA">xmlUCSIsArabicPresentationFormsA</a><br />
 </dd><dt>ArabicPresentationForms-B</dt><dd><a href="html/libxml-xmlunicode.html#xmlUCSIsArabicPresentationFormsB">xmlUCSIsArabicPresentationFormsB</a><br />