pidgin/pidgin

fix some issues that were identified while working on a flatpak build

Fix some issues that were discovered while working on a flatpak

Testing Done:
built a flatpak (that'll be a separate review request) and ran into some issues..

First was bonjour_ft wouldn't build, not sure how/why that isn't happening elsewhere.. but whatever..

Next was the network monitor stuff I moved us to way back in december of 2015 works, but under flatpak the network is initially unavailable but then becomes available. A bunch of our code was __only__ checking network availability at startup and then not listening for changes later. This code is really gross right now, but a lot of it is going to need some major refactoring where as this effort was just to get this going right now.

Reviewed at https://reviews.imfreedom.org/r/66/
#if !defined(PIDGIN_GLOBAL_HEADER_INSIDE) && !defined(PIDGIN_COMPILATION)
# error "only <pidgin.h> may be included directly"
#endif
#ifndef PIDGIN_ABOUT_H
#define PIDGIN_ABOUT_H
/**
* SECTION:pidginabout
* @section_id: pidgin-about
* @short_description: <filename>pidginabout.h</filename>
* @title: About Dialog
*/
#include <gtk/gtk.h>
G_BEGIN_DECLS
#define PIDGIN_TYPE_ABOUT_DIALOG (pidgin_about_dialog_get_type())
G_DECLARE_FINAL_TYPE(PidginAboutDialog, pidgin_about_dialog, PIDGIN,
ABOUT_DIALOG, GtkDialog)
GtkWidget *pidgin_about_dialog_new(void);
G_END_DECLS
#endif /* PIDGIN_ABOUT_H */