* glib/EnumWrapper.cs: New class which holds an enum int.
* glib/Value.cs: Add support for glib enum types. We needed
to use EnumWrapper for this because otherwise the int operator
wouldn't know which glib function to use.
* generator/BoxedGen.cs, ClassBase.cs, Ctor.cs, EnumGen.cs,
InterfaceGen.cs, Method.cs, ObjectGen.cs, Signal.cs, StructGen.cs:
Create more doc stubs.
* generator/Property.cs: Generate enum values correctly.
* generator/Ctor.cs: Refactor generation to honor metadata-specified
collision preference.
* parser/Gtk.metadata: Added constructor collision preferences to
all known clashes.
* parse/Gdk.metadata: Added (for Pixbuf clashes).
svn path=/trunk/gtk-sharp/; revision=5437
