Release of libxml2-2.8.0

- Makefile.am: don't package .git
- configure.in : update to new release
- doc/xml.html: added the new release
- doc/* testapi.c: regenerated
diff --git a/doc/APIchunk27.html b/doc/APIchunk27.html
index 9ea24bd..7123c06 100644
--- a/doc/APIchunk27.html
+++ b/doc/APIchunk27.html
@@ -254,7 +254,8 @@
 </dd><dt>word</dt><dd><a href="html/libxml-HTMLparser.html#_htmlElemDesc">_htmlElemDesc</a><br />
 </dd><dt>words</dt><dd><a href="html/libxml-xpathInternals.html#xmlXPathNormalizeFunction">xmlXPathNormalizeFunction</a><br />
 <a href="html/libxml-xpathInternals.html#xmlXPathStringLengthFunction">xmlXPathStringLengthFunction</a><br />
-</dd><dt>work</dt><dd><a href="html/libxml-tree.html#xmlNodeGetBase">xmlNodeGetBase</a><br />
+</dd><dt>work</dt><dd><a href="html/libxml-tree.html#xmlBufferDetach">xmlBufferDetach</a><br />
+<a href="html/libxml-tree.html#xmlNodeGetBase">xmlNodeGetBase</a><br />
 <a href="html/libxml-pattern.html#xmlPatternStreamable">xmlPatternStreamable</a><br />
 <a href="html/libxml-tree.html#xmlRemoveProp">xmlRemoveProp</a><br />
 <a href="html/libxml-parser.html#xmlSAXParseDoc">xmlSAXParseDoc</a><br />