conn: move a bunch of newConnection into conn.init()
conn: move a bunch of newConnection into conn.init()

so that we can re-init a connection if necessary

Conflicts:
	radix/connection.go

fzzy/radix,ctrlaltdel121/radix,mediocregopher/radix.v3,bpowers/radix,rightscale/radix,bpowers/radix,beni55/radix,alphagov/radix,gabrielperezs/radix.improved,mediocregopher/radix.v2,trigrass2/radix