[gtk] (14 commits) ...Merge branch 'wip/otte/for-master' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  b03069b... a11y: Remove double initialization of variables (*)
  b75db7d... stringfilter: Don't crash if the expression returns "" (*)
  f75a3a0... stringlist: Take a const char const * argument (*)
  5080730... listmodels: Stop respecting item-type (*)
  795d312... selectionmodels: Add set_model() support (*)
  6f2f828... tests: Make testlistview be a list again (*)
  6099fba... bitset: Add gtk_bitset_new_range() (*)
  fb14f50... stringlist: Make property not construct-only (*)
  a979daa... stringlist: Make one constructor call the other (*)
  67cbb2a... stringlist: Clarify docs for gtk_string_list_get_string() (*)
  c4e4de3... stringlist: Remove n_additions argument from gtk_string_lis (*)
  f6c2c2e... stringlist: Call splice() for adding items after constructi (*)
  1dbb8df... stringlist: Export gtk_string_object_new() (*)
  d65214f... Merge branch 'wip/otte/for-master' into 'master'

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