futility: Change 'gbb_utility' to sub command 'gbb'.

'gbb_utility' is the command name before it has been merged to futility.
However, it's pretty long and redundant today if we have to type
'futility gbb_utility ...'. New features of futility are now implemented
as sub-commands (futility cmd) instead of symlinks (for example,
'create', 'show', 'sign', 'verify') so it seems reasonable to just
change gbb_utility to a sub-command style name 'gbb'.

Meanwhile, for backward compatibility, the 'gbb_utility' name is still
supported so symlinks will still work.

BRANCH=none
BUG=None
TEST=emerge vboot_reference; futility gbb

Change-Id: I4de59bcc564576420ab71157cb166fc8a42e85ad
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/538398
Reviewed-by: Randall Spangler <rspangler@chromium.org>
1 file changed