the uml_exclusively and genext2fs behavior are handled by Create, this is
much nicer because a new filsystem type can be created without having to wait
for everything to be copied again to the sources directory.
If a terminfo directory is found, linux will need to exist or the test will
return error. This is better because the root filesystem can still work
if this information doesn't exist. A minority of gettys will fail if they
use termcap or terminfo, but this check was removed from the chrooted tests
several months ago for the reason just cited. Note: check_getty_type_call
was removed from Yard.pm, but exists in chrooted tests without the termcap
check. Also, added a close which was missing.