SimpleConnection: reduce simulation delay to zero
SimpleConnection: reduce simulation delay to zero

This schedules the connection/disconnection as if they were network events,
but without delay, which should speed up 'make check'.

Distrotech/telepathy-glib,Distrotech/telepathy-glib,Distrotech/telepathy-glib,Distrotech/telepathy-glib,Distrotech/telepathy-glib