* g10/delkey.c (confirm_deletion): Reconfirm primary key deletion.
* po/pt.po: Translate primary key deletion confirmation message.
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The primary key is more important than the subkeys bound to it.
Confirming its deletion explicitly reduces the chance of accidents.
Signed-off-by: Matheus Afonso Martins Moreira <matheus.a.m.moreira@gmail.com>