telepathy: return a different provider name based on the IM protocol
telepathy: return a different provider name based on the IM protocol

https://bugzilla.gnome.org/show_bug.cgi?id=696267

halfline/gnome-online-accounts,dnohales/gnome-online-accounts,dnohales/gnome-online-accounts,Distrotech/gnome-online-accounts,dnohales/gnome-online-accounts,halfline/gnome-online-accounts,Distrotech/gnome-online-accounts,halfline/gnome-online-accounts,ritzk/gnome-online-accounts,felipeborges/gnome-online-accounts,Distrotech/gnome-online-accounts,felipeborges/gnome-online-accounts,ritzk/gnome-online-accounts,felipeborges/gnome-online-accounts,ritzk/gnome-online-accounts