pidgin/pidgin

Install our appdata file to $(datadir)/metainfo as that change was made a long time ago

This patch originates from Lars Wendler from Gentoo

https://gitweb.gentoo.org/repo/gentoo.git/commit/net-im/pidgin/files/pidgin-2.13.0-metainfo.patch?id=2dd6c1852251b5b67c3045badf173be9535b97a9

Testing Done:
Installed to a prefix and verified the file ended up in `$prefix/share/metainfo`

Reviewed at https://reviews.imfreedom.org/r/607/
/**
* @file gtkpluginpref.h GTK+ Plugin Preferences
* @ingroup pidgin
*/
/* pidgin
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*
*/
#ifndef _PIDGINPLUGINPREF_H_
#define _PIDGINPLUGINPREF_H_
#include "pluginpref.h"
#include "pidgin.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* Creates a Gtk Preference frame for a PurplePluginPrefFrame
*
* @param frame PurplePluginPrefFrame
* @return The gtk preference frame
*/
GtkWidget *pidgin_plugin_pref_create_frame(PurplePluginPrefFrame *frame);
#ifdef __cplusplus
}
#endif
#endif /* _PIDGINPLUGINPREF_H_ */