pactrans: add --ignore-pkg and --ignore-group
pactrans: add --ignore-pkg and --ignore-group

--ignore and --ignoregroup are included as undocumented aliases for
pacman compatibility.

Signed-off-by: Andrew Gregory <13115e38efea9b5bf08524f6765f5bb44291d47f@gmail.com>

andrewgregory/pacutils,andrewgregory/pacutils