client: Variable cleanup
client: Variable cleanup

- Remove main:: prefix on variable accesses in code imported from HTTPSSH.pm

- Replace "our" declarations with "my" declarations, since "our" is now
unnecessary

- Remove some unused globals

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