Bug 699909 — Do not use toggle_refs in CamelObjectBag
Bug 699909 — Do not use toggle_refs in CamelObjectBag

They are broken and not thread-safe. Use GWeakRef instead to fix the
original problem that they were introduced to fix (bug 638810).

tintou/evolution-data-server,matzipan/evolution-data-server,matzipan/evolution-data-server,Distrotech/evolution-data-server,tintou/evolution-data-server,matzipan/evolution-data-server,tintou/evolution-data-server,matzipan/evolution-data-server,Distrotech/evolution-data-server,Distrotech/evolution-data-server,matzipan/evolution-data-server,Distrotech/evolution-data-server,Distrotech/evolution-data-server,tintou/evolution-data-server