Change option name from nohalt to power-off-on-abort

Signed-off-by: KANATSU Minoru <icc.pot.tyew272@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
Http Server: Setting the download mode to file when seting the target file

The upload file mechanism got broken when additional option was added to send
information to the server.  This change first set the upload mode to file when
the temp_file name is set, it also cleans the file handler that do the upload,
by setting the target file before the download is starts.

Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>