mel: drop unnecessary gettext version prefs

Signed-off-by: Christopher Larson <kergoth@gmail.com>
dhcp: 4.2.5-P1 -> 4.3.0

Signed-off-by: Christopher Larson <kergoth@gmail.com>
getttext-0.16.1: drop fix which is now upstream

Signed-off-by: Christopher Larson <kergoth@gmail.com>