gtk+-3.0: Correct binding for IconView.convert_widget_to_bin_window_coords

The last two arguments are 'out'.
dbusserver: Rename the generated "parameters" identifier

Fixes bug 725555.
gio-2.0: Make Action.state, state_type and parameter_type nullable

Fixes bug 725367
gio-2.0: Also make Action.get_state_hint nullable
cogl-1.0: Fix some array arguments in Cogl.Texture