[ostree] (10 commits) Created branch wip/ostbuild-v3

[Colin Walters <walters src gnome org>]

The branch 'wip/ostbuild-v3' was created.

Summary of new commits:

  d7a15b3... core: Allow adding related objects to commits
  cd38cb1... core: Add write-refs builtin
  b118590... ostbuild: Make binary snapshots an extension of source
  6cd2de1... ostbuild: Minor fixes
  ca66376... ostbuild: Write out related objects on composes
  cd49bc8... ostbuild: Make partial builds work
  36d9876... ostbuild: More work on partial builds
  e310611... ostbuild: Tighten build process significantly
  be5acd7... ostbuild: Add import-tree
  77327d0... ostadmin: Update for new trees/ location of trees