Release of libxml2-2.7.4

* configure.in: new version
* libxml.spec.in: cleanup
* xmlregexp.c: fix a comment
* doc/apibuild.py: update
* doc/*: regenerate everything

python/setup.py

@@ -226,7 +226,7 @@ else:
 setup (name = "libxml2-python",
        # On *nix, the version number is created from setup.py.in
        # On windows, it is set by configure.js
-       version = "2.7.3",
+       version = "2.7.4",
        description = descr,
        author = "Daniel Veillard",
        author_email = "veillard@redhat.com",