[ostree] (19 commits) ...ostbuild: Drop dead branch-prefix and pull-components

[Colin Walters <walters src gnome org>]

Summary of changes:

  d7a15b3... core: Allow adding related objects to commits (*)
  cd38cb1... core: Add write-refs builtin (*)
  cf53ed5... core: Limit recursion during traversal
  f950900... core: Map metadata from repository as trusted
  4f95106... core: Prefer packed metadata
  c18817e... tests: Tweak valgrind suppression
  65165ff... ostbuild: Make binary snapshots an extension of source
  829a760... ostbuild: Minor fixes
  5d0744e... ostbuild: Write out related objects on composes
  eae6951... ostbuild: Make partial builds work
  92244c8... ostbuild: More work on partial builds
  f4aba2a... ostbuild: Tighten build process significantly
  6e2efc6... ostbuild: Add import-tree
  3a20f6a... ostadmin: Update for new trees/ location of trees
  bcab674... ostbuild: Some work on qemu deployment
  a3246d5... ostbuild: Fix git-mirror
  ecfd9b2... ostbuild: Remove /var from components
  32020e5... ostbuild: Various fixes, removal of dead code
  790d275... ostbuild: Drop dead branch-prefix and pull-components

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