_gentoolkit: remove equery changes command completion

it is removed since gentoolkit 0.6.0.

Bug: https://bugs.gentoo.org/945358
Closes: #34
Signed-off-by: Leo Douglas <[email protected]>
Signed-off-by: Mike Gilbert <[email protected]>

AUTHORS: fix mva's email

Signed-off-by: Vadim Misbakh-Soloviov <[email protected]>

Add --changed-deps to emerge completion

Signed-off-by: Vadim Misbakh-Soloviov <[email protected]>

correct 'overlat' to 'overlay' in _layman

Signed-off-by: Vadim Misbakh-Soloviov <[email protected]>

20080110 Release