Log message:
librsvg: fix grammar and style in several comments

Log message:
librsvg: update to 2.50.7

This includes a crate dependency update due to a security issue,
RUSTSEC-2020-0146.

==============
Version 2.50.7
==============

Two cairo-related bug fixes:

- #745 - Fix mismatched cairo_save/restore when running in inside the Cairo test \ 
suite.
- #746 - Possible cairo_save() without cairo_restore() in render_layer().

==============
Version 2.50.6
==============

This release fixes an important bug about text spacing.  The bug fix
requires an update to at least Pango 1.44.  Sorry for the increased
requirements!

- Librsvg now requires at least Pango 1.44.

- #730 - Incorrect text spacing when the transform is not 1:1.  You
  can see this when a small font-size is scaled up due to a
  transform.  It is less visible for a large font-size scaled down.

- #704 - Fix circle/ellipse in paths when they are made out of a
  single Arc command.

==============
Version 2.50.5
==============

- #699 - Images embedded as data: URLs didn't render if they had a
  MIME type with a charset parameter.

- #691 - Don't allow number lists with unbounded lengths in
  tableValues attributes, for feComponentTransfer and
  feConvolveMatrix (Madds H).

- #718 - Negative rx/ry in rect element should be ignored.

==============
Version 2.50.4
==============

Update dependent crates that had security vulnerabilities:

  generic-array to 0.13.3 - RUSTSEC-2020-0146

- #686 - Reduced stack usage (Sebastian Dröge).

- #698 - Add limit for too-large radiuses on the feMorphology filter (Madds H).

- #703 - Properly ignore elements in an error state inside the \ 
"switch" element.

Log message:
librsvg: use c version on powerpc for now, rust build is unreliable

Log message:
librsvg: reflect correct minimum Rust version

Log message:
revbump for textproc/icu

Log message:
librsvg: update to 2.50.3.

Version 2.50.3

- #601 - Compute correct bounds for objects with stroke-width=0.

- #545 - Fix MacOS build (Ignacio Casal Quinteiro, Christian Hergert).

- Fix test suite on Rust 1.49 (Sven Neumann).

Version 2.50.2

- #642 - Fix dx/dy offsets in nested <tspan> elements.

Version 2.50.1

- #615: SVG2: Support a chain of uri() filters in the "filter" property
  (John Ledbetter, Sven Neumann).

- #483: Support CSS selectors for attribute matching, like \ 
rect[attr^="prefix"]

- #554: Fixed the geometry_for_layer() APIs to not ignore the passed viewport.

- Fixed CSS "import" so it allows only files from the same base directory
  (Lars Schmertmann).

- #623 - The pkg-config files (*.pc) do not define the 'svgz_supported' and
  'css_supported' variables anymore.  These variables were hardcoded
  to 'true' and unchanged since 2011.

- #624 - The source repository no longer produces a librsvg-uninstalled.pc file.

Version 2.50.0

- The following is a summary of changes between 2.48.x and 2.50.0.  For
  full details, please see the 2.49.x release notes below.

- This release requires at least Rust 1.40.

- Windows builds now support ARM64, thanks to Chun-wei Fan.

- Librsvg now consumes much less memory for large SVG files.  The limit for
  the maximum number of elements in an SVG is bigger now at 1 million
  elements (this limit exists to avoid unbounded memory consumption by
  maliciously large files, and is plenty to render even very detailed
  maps).  Thanks to Sergey "Shnatsel" Davidoff and Adam Reichold for making
  this possible.

- #34 - The 'font' shorthand in is now supported in CSS.  Librsvg
  ignores the 'line-height' sub-property because it cannot be done
  easily with Pango, but everything else in 'font' should work now.

- Many new features from SVG2:

- #508 - radialGradient now supports the "fr" property from SVG2
  (Dunja Lalic, Corentin Rossignon).

- #568 - Support href attribute in addition to xlink:href per SVG2.

- #560 - Ignore missing filter references per SVG2.

- #607 - Support the mix-blend-mode property from SVG2 and the
  Compositing and Blending Level 1 specification, so layers can be
  composited with operators like multiply/screen/color-burn, etc.
  https://www.w3.org/TR/compositing-1/ (John Ledbetter).

- #473 - Support the paint-order property from SVG2, so one can pick
  the order in which a path's fill/stroke/markers are drawn (John Ledbetter).

- Many bug fixes and little optimizations; see the 2.49.x release notes for
  details.  Thanks to Paolo Borelli, Daniel Kolesa, Ernestas Kulik.
  Sven Neumann, Bastien Orivel, Jordan Petridis, Emile Snyder.

- Special thanks to Sven Neumann for fixing all the cargo-clippy lints.

Version 2.49.5

- #607 - Support the mix-blend-mode property from SVG2 and the
  Compositing and Blending Level 1 specification, so layers can be
  composited with operators like multiply/screen/color-burn, etc.
  https://www.w3.org/TR/compositing-1/ (John Ledbetter).

- #473 - Support the paint-order property from SVG2, so one can pick
  the order in which a path's fill/stroke/markers are drawn (John Ledbetter).

- Cleanups of the basic drawing and paint-handling code (Paolo Borelli).

- Many style fixes per cargo-clippy (Sven Neumann).

- Improved documentation on the library's internals.

Version 2.49.4

- Support ARM64 Windows builds (Chun-wei Fan).

- #165 - Draw zero-length paths with square caps correctly (Bastien Orivel).

- #568 - Support href attribute in addition to xlink:href per SVG2.

- #560 - Ignore missing filter references per SVG2.

- #609 - Support the transform attribute again in clipPath (Sven Neumann).

- Update Criterion benchmarks (Ernestas Kulik).

- Update to newer dependencies (Bastien Orivel).

- Many style fixes per cargo-clippy (Dunja Lalic, Sven Neumann).

Version 2.49.3

- #34 - The 'font' shorthand in is now supported in CSS.  Librsvg
  ignores the 'line-height' sub-property because it cannot be done
  easily with Pango, but everything else in 'font' should work now.

- #605 - Compute 'bolder' and 'lighter' font-weight correctly.

- #219 - Make the path parser have a tokenizer/parser (Emile Snyder).

- Fixes for the CI after the gitlab.gnome.org changes (Jordan Petridis).

- Fixed some typos in the documentation (codespell is awesome!).

Version 2.49.2

- Fix failing tests.

Version 2.49.1

- (#604) - Fix build on big-endian machines.  Thanks to Daniel Kolesa
  for testing this repeatedly.

Version 2.49.0

- Memory consumption of parsed SVG data is greatly reduced.  Property
  values, path data, and text nodes now use much less memory than
  before.  Thanks to Sergey "Shnatsel" Davidoff and Adam Reichold for
  their contributions.

- With that reduction in memory consumption, librsvg can now load up
  to 1 million XML elements.  This is a hard limit to avoid malicious
  files consuming arbitrary amounts of memory.

- #508 - radialGradient now supports the "fr" property from SVG2
  (Dunja Lalic, Corentin Rossignon).

- Sven Neumann has written a fantastic test suite for rsvg-convert(1).
  Now we can modify this program with confidence.

- Many, many cleanups (Paolo Borelli).

- #594 - Only compute locale information for elements that need it.

- As usual, thanks to Bastien Orivel for keeping dependent crates updated.

- Fix Windows builds without PangoFT2.

- Benchmarks of internal functions work now.  You can run "cargo bench"
  in librsvg/ and rsvg_internals/.

Version 2.48.5

- #577 - Support multiple fonts in the font-family property (Bastien Orivel).
  Previously in font-family="Foo, Bar, Baz" only Foo would get used.

- #591 - Catch overflow when rendering files with a huge viewBox.

- #593 - Don't panic with an empty objectBoundingBox for a mask.

- #596 - Fix introspection data for rsvg_handle_set_stylesheet (Sutou Kouhei).

- Fixes to the librsvg_crate documentation (Abraham Toriz).

- Loading raster images for inclusion in an SVG and producing
  GdkPixbufs is now faster.

Version 2.48.4

- #590 - Fix regression when rendering masks.

- #588 - Fix panic when a big viewBox creates an invalid transform.

- #592 - Fix invalid argument to g_log_structured_array()

Log message:
librsvg: Fix illumos target.

Log message:
Revert last change and just depend on properly specified dependencies.

Log message:
Fix librsvg dependency patterns.

For the rust case, drop the redundant ancient API version and always add
the default ABI version, even if a package already specified one.

For the C case, provide an upper limit for both the API and ABI version,
so that the merge logic handles the cases correctly. Most noticable,
don't provide separate upper and lower limits.

Log message:
librsvg: Restore default of librsvg-c on ARM

Avoid rust version in pbulk when C version is selected

Follows comments by gdt by email