* generator/GenBase.cs: new method AppendCustom, moved from ObjectGen.
* generator/BoxedGen.cs, ObjectGen.cs, StructGen.cs:
Call AppendCustom in Generate ();
* generator/Method.cs, Parameters.cs: Add support for "out"
parameters. Additionally, output an accessor instead of a
regular method if it is an accessor-style function (ie GetStartIter).
* generator/Property.cs: Add additional cast to Boxed, if necessary.
* glue/textiter.c: New constructor for GtkTextIter.
* glue/Makefile.am: Add textiter.c, build with Gtk+ cflags.
* configure.in: Check for Gtk+ cflags.
* parser/Metadata.pm, Gtk.metadata: Added.
* parser/gapi2xml.pl: Call Metadata::fixup on the document.
Also work around gtk's screwy boxed type name registration
(GtkFoo -> GtkTypeFoo).
* gtk/TextIter.custom: Added.
svn path=/trunk/gtk-sharp/; revision=5205
