[gtk] (8 commits) Non-fast-forward update to branch glshader-paintable

[Matthias Clasen <matthiasc src gnome org>]

The branch 'glshader-paintable' 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:

  6c31911... Add a shader paintable
  e1599fe... Work around linker problems
  71fbd45... gtk-demo: Add a shader paintable demo
  4d4540d... gtk-demo: Add a shader paintable to the fishbowl

Commits added to the branch:

  e93a51b... GskGLShader: Drop fallback node and add try_compile functio
  a234ab1... Finish remaining renames from GLSHADER to GL_SHADER (etc)
  32aa470... Rename uniform_data to shader args, or just args
  e4dfa55... gtk_snapshot_push_gl_shader: Make @args transfer-full
  810e9c2... snapshot: Drop the varargs versions of push_gl_shader()
  bdcc29e... gtk-demo: Add a shader paintable
  1bc81fa... gtk-demo: Add a shader paintable demo
  e0b3746... gtk-demo: Add a shader paintable to the fishbowl