pidgin/pidgin

Port the updates from 2.14.2 and the upcoming 2.14.3 to 3.0.0

* Use the unicode version of the System and UserInfo plugins to fix
non-english languages in the Windows installer.
* Update the installer to use the inetc plugin so that https downloads will
work. This became necessary because Sourceforge now redirects http to
https.
* Standardize everything in pidgin/win32/winpidgin.c to use `wprintf`.

Testing Done:
Compiled and ran on windows 10.

Reviewed at https://reviews.imfreedom.org/r/595/
---
id: im.pidgin.Pidgin3
runtime: org.gnome.Platform
runtime-version: '3.36'
sdk: org.gnome.Sdk
command: pidgin3
finish-args:
- --share=ipc
- --socket=fallback-x11
- --share=network
- --socket=pulseaudio
- --talk-name=org.freedesktop.Notifications
- --system-talk-name=org.freedesktop.Avahi
modules:
- packaging/flatpak/libpurple-common.yml
- packaging/flatpak/talkatu.yml
- name: pidgin3
buildsystem: meson
config-opts:
- -Dconsoleui=false
- -Ddoc=false
sources:
- type: dir
path: '.'