applied a cleanup patch from Peter Breitenlohner removed a doc build

* Makefile.am catalog.c configure.in: applied a cleanup patch
  from Peter Breitenlohner
* tree.c: removed a doc build warning by fixing a param comment
* doc/* : rebuilt the docs
Daniel
diff --git a/configure.in b/configure.in
index c808a26..6acc92d 100644
--- a/configure.in
+++ b/configure.in
@@ -1054,6 +1054,6 @@
 ln -s Copyright COPYING
 
 # keep on one line for cygwin c.f. #130896
-AC_OUTPUT(libxml2.spec:libxml.spec.in Makefile include/Makefile include/libxml/Makefile doc/Makefile doc/examples/Makefile example/Makefile python/Makefile python/tests/Makefile include/libxml/xmlversion.h xml2-config libxml-2.0.pc libxml-2.0-uninstalled.pc xml2Conf.sh python/setup.py)
+AC_OUTPUT(libxml2.spec:libxml.spec.in Makefile include/Makefile include/libxml/Makefile doc/Makefile doc/examples/Makefile example/Makefile python/Makefile python/tests/Makefile include/libxml/xmlversion.h xml2-config libxml-2.0.pc libxml-2.0-uninstalled.pc python/setup.py)
 
-chmod +x xml2-config xml2Conf.sh python/setup.py
+chmod +x xml2-config python/setup.py