[pango] (5 commits) Non-fast-forward update to branch pango2

[Matthias Clasen <matthiasc src gnome org>]

The branch 'pango2' 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:

  08bfe5d... Allow variant information in face descriptions
  e5b7252... Add PANGO_RENDERING_CAIRO
  0becbb4... Generate a pangocairo2.pc file again
  df6002c... docs: Update migration guide
  5c1c40c... build: Fix build without cairo

Commits added to the branch:

  09f3d98... Allow variant information in face descriptions
  f3253a3... Add PANGO_RENDERING_CAIRO
  aef8a16... Generate a pangocairo2.pc file again
  620a6b5... docs: Update migration guide
  8e87c0b... build: Fix build without cairo