[librsvg] (10 commits) ...Merge branch 'drawing-ctx' into 'master'

[Federico Mena Quintero <federico src gnome org>]

Summary of changes:

  a2acb30... drawing_ctx: add a getter for the offset
  22fb00e... draw: move set_affine_on_cr to rust
  1e6f382... drawing_ctx: move offset fields out of render
  30696b1... drawing_ctx: move width and height fields out of render
  62aa59b... drawing_ctx: completely remove the render object
  7843ee2... drawing_ctx: move all drawing_ctx code in cairo-draw.[ch]
  90b9835... Rename rsvg-cairo-draw to rsvg-drawing-ctx
  9bddd43... drawing_ctx: rename some methods to use the right naming co
  f84c08f... drawing_ctx: move push/pop_discrete_layer to rust
  c764bf1... Merge branch 'drawing-ctx' into 'master'