pidgin/pidgin

Add missing i18n headers.

2020-11-16, Elliott Sales de Andrade
defc6aec1761
Add missing i18n headers.

These are needed via `PIDGIN_ALERT_TITLE` -> `PIDGIN_NAME` -> `_("Pidgin")`

Testing Done:
Compile only.

Reviewed at https://reviews.imfreedom.org/r/223/
syntax: glob
.*.swp
.DS_Store
.flatpak-builder
*.pyc
*~
\#*\#
subprojects/*/
syntax: regexp
^build(.+)?\/
win32-install-dir(\.release)?