minor changes for pylint, write_boot_content improvement.

if write_boot_content is given somethign that starts with #!,
then there isn't a reason to invoke 'file' to tell us that it
starts with shebang.

This way, we only run file in 2 cases:
 a.) binary content (don't really know if that is supported or not)
 b.) magic "user meant to run this with /bin/bash but couldn't be bothered to
     type that"

0 files changed, 0 insertions, 0 deletions