Regenerated API and symbols

* doc/Makefile.am: make the check for symbols pbm a make api failure
* doc/symbols.xml: added xmlXIncludeProcessTreeFlagsData
* doc//* elfgcchack.h libxml2.syms testapi.c: regenerated
diff --git a/doc/APIchunk22.html b/doc/APIchunk22.html
index 0727fd7..f6501fb 100644
--- a/doc/APIchunk22.html
+++ b/doc/APIchunk22.html
@@ -102,6 +102,7 @@
 <a href="html/libxml-xmlerror.html#xmlSetGenericErrorFunc">xmlSetGenericErrorFunc</a><br />
 <a href="html/libxml-xmlerror.html#xmlSetStructuredErrorFunc">xmlSetStructuredErrorFunc</a><br />
 <a href="html/libxml-xinclude.html#xmlXIncludeProcessFlagsData">xmlXIncludeProcessFlagsData</a><br />
+<a href="html/libxml-xinclude.html#xmlXIncludeProcessTreeFlagsData">xmlXIncludeProcessTreeFlagsData</a><br />
 <a href="html/libxml-xpath.html#xmlXPathEvalFunc">xmlXPathEvalFunc</a><br />
 <a href="html/libxml-xpathInternals.html#xmlXPathIntersection">xmlXPathIntersection</a><br />
 </dd><dt>passive</dt><dd><a href="html/libxml-nanoftp.html#xmlNanoFTPGetConnection">xmlNanoFTPGetConnection</a><br />