vala,libvaladoc: use `Module.new` to replace the deprecated `Module.open` since glib 2.70
Use Module.new to replace the deprecated Module.open to handle compilation warnings since vala 0.56.15.
See also !367 (merged)
Use Module.new to replace the deprecated Module.open to handle compilation warnings since vala 0.56.15.
See also !367 (merged)