Late api correction for 2.16

[Matthias Clasen <matthias clasen gmail com>]

Just a heads-up,

http://bugzilla.gnome.org/show_bug.cgi?id=574561

points out that the addition of gtk_style_get/gtk_style_get_property
cause some issues for object-oriented bindings, where turning this
into style.get()/style.get_property() will cause clashes with the
existing binding for g_object_get()/g_object_get_property(). The
proposal is to ignore gtk_style_get() as C convenience api, and rename
gtk_style_get_property() to gtk_style_get_style_property().


Matthias