Windows: Use backtrace.dll to print usable backtraces to stderr on crash
serial_autodetect_ftdi: Debuglog FTDI COM port mappings returned
Bugfix: Do not try to call get_stats or get_statline* if device is still initializing

Conflicts:
	miner.c

Conflicts:
	miner.c
Merge commit '12bc64e' into bfgminer-2.10.x
Bugfix: On stratum disconnect, clear stratum_active and stratum_notify atomically along with sock

Fixes a crash when stratum_write attempts to FD_SET a -1 fd

Conflicts:
	miner.c
Merge commit 'a6e2394' into bfgminer-2.10.x
Bugfix: Save start time for stats to correct "Elapsed" key on "stats" RPC request

Conflicts:
	deviceapi.c

Conflicts:
	deviceapi.c