criu --help: do not use tabs
criu --help: do not use tabs

Some lines were using tabs, some were not. Personally I am not in favor
of any style, but let's be consistent in either using tabs or not.

Changing tabs with spaces produced a smaller patch, so let's do this
way.

This patch should not produce any visual change in output.

Signed-off-by: Kir Kolyshkin <c0159612b0ef32139322233232df1a0d189c4b9b@openvz.org>
Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@parallels.com>

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