D-Bus: Report error on invalid use of register_object in GDBus servers
D-Bus: Report error on invalid use of register_object in GDBus servers

severinh/vala,spidermonkdust/vala,flobrosch/vala-fixes,jessevdk/vala,Distrotech/vala,jessevdk/vala,rvu95/vala,GNOME/vala,kamanashisroy/aroop,rvu95/vala,playya/vala,GNOME/vala,frida/vala,frida/vala,Distrotech/vala,frida/vala,playya/vala,flobrosch/vala-fixes,flobrosch/vala-fixes,spidermonkdust/vala,xdave/pvala,tjol/vala-tjol,tjol/vala-tjol,kamanashisroy/aroop,severinh/vala,rvu95/vala,frida/vala,GNOME/vala,GNOME/vala,frida/vala,tjol/vala-tjol,playya/vala,Distrotech/vala,spidermonkdust/vala,severinh/vala,jessevdk/vala,kamanashisroy/aroop