[librsvg] (11 commits) Non-fast-forward update to branch refactor-test-utils

[Sven Neumann <sneumann src gnome org>]

The branch 'refactor-test-utils' 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:

  3f935c1... Draft a predicate to compare a PNG file's contents to a ref
  215726e... Refactor test_utils and move it to the tests
  f8b96bd... Implement PngPredicate.with_contents() using tests::referen
  9af8ed5... Add test to verify that rsvg-convert renders the background

Commits added to the branch:

  dac42df... rsvg-convert: Overwrite existing files by default (*)
  3ce71af... rsvg-convert: rename variables (*)
  bde810b... rsvg-convert: Extract function to compute the natural size  (*)
  9349686... rsvg-convert: return a Size from natural_size(), not a (w,  (*)
  878cf43... rsvg-convert: extract the final_size computation to a funct (*)
  8bc8d26... rsvg-convert: Compute the natural and final sizes outside o (*)
  f45a92a... rsvg-convert: Fix misrendered images with non-1.0 zooms (*)
  89563e6... Draft a predicate to compare a PNG file's contents to a ref
  382782c... Refactor test_utils and move it to the tests
  db9075a... Implement PngPredicate.with_contents() using tests::referen
  1a90650... Add test to verify that rsvg-convert renders the background

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