[glibmm] (7 commits) Non-fast-forward update to branch wip/dboles/Binding-Issue#62

[Daniel Boles <dboles src gnome org>]

The branch 'wip/dboles/Binding-Issue#62' 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:

  bacd92c... Binding: Test that unbind() stops props syncing
  8691675... Binding: Clarify need to hold ref, poss empty objs
  6c08aa6... Binding: Add set_manage() to not require a RefPtr

Commits added to the branch:

  c66533c... fix ustring::insert(iterator, In, In) (*)
  65ddb67... Glib::Binding: get_source() and get_target() return ObjectB (*)
  89cfdff... Merge branch 'fix-ustring-insert' into 'master' (*)
  d3f7d61... Avoid unnecessary conversions between std::string and Glib: (*)
  471c470... Binding: Test that unbind() stops props syncing
  9682c4d... Binding: Clarify need to hold ref, poss empty objs
  64a5714... Binding: Add set_manage() to not require a RefPtr

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