pidgin/pidgin

Use G_DECLARE_DERIVABLE_TYPE for PurpleConversation and additional cleanups

The setters for PurpleConversation are kind of crappy because of the
conversation cache in the purple_conversations api, which we'll address at a
later time.

Testing Done:
Compiled and ran locally, parted a chat and just signed out to verify no new issues.

Reviewed at https://reviews.imfreedom.org/r/613/
#!/usr/bin/env python3
#
# Pidgin - Internet Messenger
# Copyright (C) Pidgin Developers <devel@pidgin.im>
#
# Pidgin is the legal property of its developers, whose names are too numerous
# to list here. Please refer to the COPYRIGHT file distributed with this
# source distribution.
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, see <https://www.gnu.org/licenses/>.
import sys
input = sys.argv[1]
output = sys.argv[2]
with open(input, 'rb') as r, open(output, 'wb') as w:
for line in r.readlines():
if line.startswith((b'_Name=', b'_Description=', b'_Author=')):
line = line[1:]
w.write(line)