pidgin/pidgin

Replace the account-actions-changed signal with an actions-changed signal on PurpleProtocolActions

We also propagate the PurpleProtocolActions::actions-changed signal from the
PurpleProtocolManager::account-actions-changed signal if the protocol implements
the PurpleProtocolActions interface.

Testing Done:
Build the docs and ran the unit tests.

I also put a temporary action in the demo protocol plugin and called `purple_protocol_actions_changed` after the demo protocol connected. I will have another pull request that makes this a permenent action, but I want to convert the demo protocol plugin to subclass PurpleConnection before doing so as that will be accounting of everything *much* easier.

Reviewed at https://reviews.imfreedom.org/r/2168/
/* 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
*/
#include <purple.h>
#include "gtkaccount.h"
#include "pidgincore.h"
void
pidgin_accounts_init(void)
{
purple_prefs_add_none(PIDGIN_PREFS_ROOT "/accounts");
purple_prefs_add_none(PIDGIN_PREFS_ROOT "/accounts/dialog");
purple_prefs_add_int(PIDGIN_PREFS_ROOT "/accounts/dialog/width", 520);
purple_prefs_add_int(PIDGIN_PREFS_ROOT "/accounts/dialog/height", 321);
purple_prefs_add_path(PIDGIN_PREFS_ROOT "/accounts/buddyicon", NULL);
}
void
pidgin_accounts_uninit(void)
{
}