[gtk] (59 commits) Non-fast-forward update to branch image-loading

[Benjamin Otte <otte src gnome org>]

The branch 'image-loading' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  2b4be0b... texture: Add error enum
  243b8d3... Add code to load and save pngs
  39a01d8... Load pngs without gdk-pixbuf
  de999c3... Save pngs without cairo
  b925738... Add tests for the png loader
  abec4fd... Add gdk_texture_save_to_png_bytes
  02a731d... Add code to load and save tiff files
  82b1c4a... Load tiffs without gdk-pixbuf
  0793faf... Add tests for the tiff loader
  33eb58b... Add gdk_texture_save_to_tiff
  8080493... Add code to load jpegs
  9e85aff... Load jpegs without gdk-pixbuf
  a202e63... Add tests for the jpeg loader
  967009e... Use our own loaders for content (de)serialization
  482aa1d... Add contentserializer tests for textures
  74f7e7b... rendernodeparser: Use gdk_texture_save_to_png_bytes
  4b8b294... rendernodeparser: Avoid gdk_texture_new_for_pixbuf
  d13442e... texture: Add gdk_texture_save_to_tiff_bytes()
  d7e5665... testsuite: Add png and tiff methods
  97654c4... texture: Avoid pixbufs when loading resources
  3d44e05... texture: Remove declaration for nonexisting function
  b5af18e... texture: Split out type detection
  ed9c88e... texture: Add private can_load() function
  a5d27eb... icontheme: Load textures directly when possible
  439ca27... icontheme: Use textures more
  3b5d259... builder: create textures without pixbufs
  3426965... cssimageurl: Just create a texture directly
  1ba0ff0... builder: Stop using pixbufutils
  6dba940... Add code to save jpegs
  b29a976... contentdeserializer: Use our on jpeg loader
  24737f4... Support 16bit formats in the png loader

Commits added to the branch:

  ed67970... theme: make toggled tbuttons in toolbars visible (*)
  025759e... Merge branch 'wip/jimmac/make-toolbar-togglebuttons-visible (*)
  c9aec9b... Do not require wayland-protocols as dependency in the .pc f (*)
  01944d5... Merge branch 'master' into 'master' (*)
  b6d3561... testsuite: Be more verbose in texture-threads test (*)
  a4f3fbb... gltexture: Fix download() for GLES (*)
  551f76e... gltexture: Fallback in download_float() (*)
  64acaf9... testsuite: Fix race in texture-threads test (*)
  75dfb4d... API: Add gdk_texture_new_from_filename() (*)
  de53b0c... testsuite: remove box-order test (*)
  3a8ec68... reftests: Make diff pixels always opaque (*)
  0dfab46... reftests: Use GdkTexture instead of cairo_surface_t (*)
  390a0b2... ngl: Fix opacity handling (*)
  46bb160... testuite: Add opacity-overdraw test (*)
  c84d5b1... tests: Update rendernode test to use textures (*)
  625b5ce... testsuite: Port compare_render() to use textures (*)
  90ed7b9... reftests: Use 0.6 alpha, not 0.5 (*)
  4733059... reftests: Use 0.6 instead of 0.5 for alpha (*)
  58f66eb... reftests: Make image-compare use textures (*)
  7cf5e55... testsuite: Switch color from khaki to yellow (*)
  62954a0... ngl Fix bottom-right border render failure (*)
  9e14de2... ngl: Improve shortcuts for shadow nodes (*)
  93323be... ngl: Avoid offscreens in more cases (*)
  56b31c3... rendernodeparser: Handle is_color attribute for glyphs (*)
  08df891... reftests: Use colors without rounding errors (*)
  345faa7... reftests: XFAIL border-half-pixel test (*)
  83ea623... reftests: Use the default (aka NGL) renderer (*)
  698b354... Merge branch 'modern-testsuite' into 'master' (*)
  66031fd... texture: Add error enum
  f51f7f8... Add code to load and save pngs
  a71877b... Load pngs without gdk-pixbuf
  7949aaa... Save pngs without cairo
  d6ce65f... Add tests for the png loader
  d7c8f92... Add gdk_texture_save_to_png_bytes
  a03594d... Add code to load and save tiff files
  f925e12... Load tiffs without gdk-pixbuf
  945c253... Add tests for the tiff loader
  d30a029... Add gdk_texture_save_to_tiff
  729ba81... Add code to load jpegs
  daf29e1... Load jpegs without gdk-pixbuf
  e30b4c6... Add tests for the jpeg loader
  d27bc74... Use our own loaders for content (de)serialization
  95a0c93... Add contentserializer tests for textures
  5b82cf1... rendernodeparser: Use gdk_texture_save_to_png_bytes
  c77b5c4... rendernodeparser: Avoid gdk_texture_new_for_pixbuf
  b1bb7c3... texture: Add gdk_texture_save_to_tiff_bytes()
  577bf10... testsuite: Add png and tiff methods
  f2ca9eb... texture: Avoid pixbufs when loading resources
  100b0bf... texture: Remove declaration for nonexisting function
  2d3de86... texture: Split out type detection
  679c93e... texture: Add private can_load() function
  d102009... icontheme: Load textures directly when possible
  da1e5bf... icontheme: Use textures more
  86faf0f... builder: create textures without pixbufs
  d398ed7... cssimageurl: Just create a texture directly
  4a2f694... builder: Stop using pixbufutils
  7f8e723... Add code to save jpegs
  18f0c93... contentdeserializer: Use our on jpeg loader
  415b2e6... Support 16bit formats in the png loader

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