4.18.2 - Update copyright year - I18n: Update po/LINGUAS list - I18n: Update po/LINGUAS list - I18n: Update po/LINGUAS list - I18n: Update po/LINGUAS list - build: Use XDT_VERSION_INIT and get rid of configure.ac.in - build: Switch from intltool to gettext - Use symbolic icons - Remove dialog subtitle - Align gst_mixer_oss_set_volume prototype with _GstMixerClass definition. - Translation Updates: Albanian, Arabic, Armenian (Armenia), Asturian, Basque, Belarusian, Bulgarian, Catalan, Chinese (China), Chinese (Hong Kong), Chinese (Taiwan), Croatian, Czech, Danish, Dutch, Eastern Armenian, English (Australia), English (Canada), English (United Kingdom), Estonian, Finnish, French, Galician, German, Greek, Hebrew, Hungarian, Icelandic, Indonesian, Interlingue, Italian, Japanese, Kazakh, Korean, Malay, Norwegian Bokmål, Occitan (post 1500), Persian (Iran), Polish, Portuguese, Portuguese (Brazil), Romanian, Russian, Serbian, Slovak, Slovenian, Spanish, Swedish, Thai, Turkish, Ukrainian, Uyghur