[pango] (17 commits) Created branch wip/baedert/for-master2

[Timm Bäder <baedert src gnome org>]

The branch 'wip/baedert/for-master2' was created.

Summary of new commits:

  b0c9b98... layout: Ignore setting the width if it won't have any effec
  993ac0a... pangocairo-context: Don't invalidate if font options are eq
  03774a4... layout: Try to avoid some work when creating iters
  99431a5... Allocate internal PangoAttrListIterators on the stack
  62fd1b5... layotu: Avoid invalidating when setting attrs from NULL to 
  25049ad... layout: Add missing (nullable) annotation
  c802c85... Allocate internal PangoAttrLists on the stack
  0efa313... layout: Avoid getting the text length if we know it already
  a79e38a... attributes: Add _pango_attr_list_has_attributes
  cc5b6c7... break_attrs: Bail out if we have no ALLOW_BREAKS attributes
  1724822... break: Make a local const
  4289a20... break: Only call break_attrs if we really have attributes
  fd7e209... glyph-item: Allocate attr iterator on the stack
  4d658d4... testattributes: Properly free GString
  c1943bd... pango-layout: Try to avoid allocating a new PangoAttrList
  9b7b67f... layout: Unconditionally unref attr lists
  ea6248f... layout: Treat empty attr lists like NULL ones