8167117: insert missing final keywords
Reviewed-by: jlaskey, sundar

8151515: $EXEC output is truncated
Reviewed-by: sundar, jlaskey

8151291: $EXEC yields "unknown command" on Cygwin
Reviewed-by: jlaskey, hannesw, sdama

8149665: $EXEC changes clean up
Reviewed-by: attila

8141209: $EXEC should allow streaming
Reviewed-by: sundar