pidgin/pidgin

Modernizing PurpleChatConversation.

2021-04-05, Gary Kramlich
73407e00ec5d
Modernizing PurpleChatConversation.

I wasn't able to do everything as PurpleConversation still isn't declared with
G_DECLARE_DERIVABLE_TYPE.

Testing Done:
Compiled ran locally with both xmpp mucs and irc channels.

Reviewed at https://reviews.imfreedom.org/r/583/
pidgin3_xml = configure_file(
input : 'pidgin3.xml.in',
output : 'pidgin3.xml',
configuration : version_conf,
install : true,
install_dir : get_option('datadir') / 'glade/catalogs')