pidgin/pidgin

Rename gtkstyle.[ch] to pidginstyle.[ch] and fix up the dark mode check.

Testing Done:
* Ran with arc-dark and adwatia.
* Stepped through the debugger to make sure it was detected right.
* Joined a muc with both themes, the colors change but there're impossible to see as most of that code is elsewhere and not addressed in this review request.
* Also noticed that nicks in mucs are doubled, not sure what, but it's that way with out this patch as well.

Reviewed at https://reviews.imfreedom.org/r/208/
/*
* nmrtf.h
*
* Copyright (c) 2004 Novell, Inc. All Rights Reserved.
*
* 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; version 2 of the License.
*
* 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 PURPLE_NOVELL_NMRTF_H
#define PURPLE_NOVELL_NMRTF_H
typedef struct _NMRtfContext NMRtfContext;
NMRtfContext *nm_rtf_init(void);
char *nm_rtf_strip_formatting(NMRtfContext *ctx, const char *input);
void nm_rtf_deinit(NMRtfContext *ctx);
#endif /* PURPLE_NOVELL_NMRTF_H */