client: Fold isr_connected_http() into connected()
client: Fold isr_connected_http() into connected()

- Have connected() check for availability of both TCP/22 and TCP/80 on the
server.  Eliminate separate isr_connected_http() function.

- Eliminate unnecessary variable in connected()

cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr