pidgin/pidgin

Fix building on glib < 2.58.0 as we have a minimum of 2.52.0

2021-03-13, Gary Kramlich
3891ef6e3b56
Fix building on glib < 2.58.0 as we have a minimum of 2.52.0

Add compatibility for G_SOURCE_FUNC and g_time_zone_new_offset that were added in 2.58.0

g_time_zone_new_offset is from 2.58.0 which might be buggy, the version of it
from glib git has some fixes it but it is much more involved so using the older
version is a calculated risk.

Testing Done:
Built on ubuntu:bionic.

Reviewed at https://reviews.imfreedom.org/r/573/
/*
* finch
*
* Finch 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/>.
*/
#ifndef FINCH_H
#define FINCH_H
#ifndef __GI_SCANNER__ /* hide this bit from g-ir-scanner */
# ifdef FINCH_COMPILATION
# error "finch source files should not be including finch.h"
# endif /* FINCH_COMPILATION */
#endif /* __GI_SCANNER__ */
#ifndef FINCH_GLOBAL_HEADER_INSIDE
# define FINCH_GLOBAL_HEADER_INSIDE
#endif /* FINCH_GLOBAL_HEADER_INSIDE */
@FINCH_H_INCLUDES@
#undef FINCH_GLOBAL_HEADER_INSIDE
#endif /* FINCH_H */