portage: enable bash-completion useflag

Signed-off-by: Gregory M. Turner <gmt@be-evil.net>
always update portage world

o Always emerge sys-apps/portage
o Always try to update world (but try to tolerate failures)

Signed-off-by: Gregory M. Turner <gmt@be-evil.net>
locale: remove thinko-hyphen breaking eselect locale

Signed-off-by: Gregory M. Turner <gmt@be-evil.net>