gemu-test - improvement of verbose output
ForkEngine - remove PID from children hash when getting SIGCHLD
fsm - fix memory/reasource leak (+test + runtime warning)
fsm - just in case explicitly close file after upload
fsm - MultipartPart - close file only when it's not STDIN

+ close in separate sub
+ validate stdin flag
+ integration test
ForkEngine - warn if SIGTERM
fsm - actually we cant print warning on glabal destruction, it can happen due to exception
gemu-test fix verbose mode