[pango] (19 commits) Non-fast-forward update to branch serialization-improvements

[Matthias Clasen <matthiasc src gnome org>]

The branch 'serialization-improvements' 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:

  3ea26fb... Rename the serialize errors
  ccdca15... Refactor enum serialization error handling
  57f2631... Add flags to serialize and deserialize
  0712927... Allow serializing context information
  fe42efa... serializer: Cosmetics
  c310f4a... More context serialization work
  5b9ecfa... Optionally serialize output
  4319546... Update test-layout
  3b45c63... pango-view: Deserialize context too
  960d07e... serializer: Support a "comment" field
  0b12eb2... Add more tests

Commits added to the branch:

  1b73b50... Fix visible space handling
  c337145... Cosmetics
  6349912... Rename the serialize errors
  12a46f6... Refactor enum serialization error handling
  c1f9c9f... Add flags to serialize and deserialize
  b9ed027... Allow serializing context information
  4d296ae... serializer: Cosmetics
  8d680a6... More context serialization work
  37d413c... pango-view: Deserialize context too
  c4fe95c... Add a way to get the font matrix
  3f6f288... Optionally serialize output
  9a63774... Update test-layout
  2b013d4... serializer: Support a "comment" field
  becb4a9... Add more tests
  580ad90... Add pango_font_serialize
  9770b4a... serializer: Include unknown glyphs count
  5f539a0... test-layout: Drop the --show-font option
  1bd9c45... Make test-layout use included fonts
  15614f7... Add a newline to serialization results