[Vala] Commit that breaks MarkupParseContext

[Sandino Flores Moreno <tigrux gmail com>]

Hello.

There was a change that breaks the normal usage of the MarkupParseContext.

The url for that commit is:
  http://git.gnome.org/browse/vala/commit/?id=2e2a42d25bd76a9e4edd2520d9e4d8b24bf80366

The problem, is that now it does not allow methods to be used as
callbacks, and it also introduces
 the parameter void * userdata that is not needed at all.

For example, this class implements a markup parser that dumps to a KeyFile:
  http://github.com/tigrux/omap-media-apps/raw/master/muxer-app/muxer-config.gs

That class parses markup files like the next one:
  http://github.com/tigrux/omap-media-apps/raw/master/muxer-app/test.xml

It was working fine before that commit. But now it does not compile.



Please. revert that commit.