[librsvg/librsvg-2.46] (14 commits) ...Appease "make distcheck" by adding an empty source list for librsvg_c_api_la_SOURCES

[Federico Mena Quintero <federico src gnome org>]

Summary of changes:

  c9827b7... (#500) Added additional SVG blend-modes for feBlend (*)
  665b979... Merge branch 'Andargor/librsvg-master' (*)
  8c91898... Regenerate test reference files with text (*)
  577dcfd... Handle::get_bbox_for_element() - Factor out duplicated code (*)
  c8540b9... handle.rs: Extract function to create a unit rectangle (*)
  c2811e0... c_api.rs: Check the incoming cairo context here to emit a g (*)
  3e11049... c_api.rs: Warn when passing external references here, not i (*)
  d8495a0... Move rsvg_g_warning() and rsvg_g_critical() to c_api.rs (*)
  7821989... Move C API glue to a librsvg_c_api crate (*)
  38fe68c... Remove the c-library feature for the librsvg_c_api crate (*)
  683d92c... Merge branch 'c_api_crate' (*)
  e6683fa... Makefile.am: remove unused variable (*)
  65bac77... Appease autotools a bit by not using _SOURCES suffixes (*)
  601b2f0... Appease "make distcheck" by adding an empty source list for (*)

(*) This commit already existed in another branch; no separate mail sent