Fix tv_lastupdate being made into tv_end and update the hashmeter on cycle, not opt_log_interval.
Bugfix: Missing pool_no parameter to applog for no-stratum-sessionid debug message
Bugfix: Duplicate stratum sessionid when copying work, to avoid double-free
Merge pull request #387 from luke-jr/bugfix_20130215b

Bugfix: Duplicate stratum sessionid when copying work, to avoid double-free
Merge pull request #386 from luke-jr/bugfix_20130215a

Bugfix: Missing pool_no parameter to applog for no-stratum-sessionid debug message
Merge branch 'usb-dev' of github.com:ckolivas/cgminer into usb-dev