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 gtkstyle.h GTK+ Style utility functions
* @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 _PIDGINSTYLE_H_
#define _PIDGINSTYLE_H_
#include <gtk/gtk.h>
G_BEGIN_DECLS
/*@{*/
/**
* Returns TRUE if dark mode is enabled and foreground colours should be invertred
*
* @param style The GtkStyle in use, or NULL to use a cached version.
*
* @return @c TRUE if dark mode, @c FALSE otherwise
*/
gboolean pidgin_style_is_dark(GtkStyle *style);
/**
* Lighten a color if dark mode is enabled.
*
* @param style The GtkStyle in use.
*
* @param color Color to be lightened. Transformed color will be written here.
*/
void pidgin_style_adjust_contrast(GtkStyle *style, GdkColor *color);
/*@}*/
G_END_DECLS
#endif /* _PIDGINSTYLE_H_ */