Implement windows 8.1+ notifications

This splits notifications up into multiple backends
currently only libnotify on unix and win8 toasts.

The win8 backend was originally written by @leeter
though heavily modified.

src/common/fe.h

@@ -178,7 +178,6 @@ typedef enum
 } feicon;
 void fe_tray_set_icon (feicon icon);
 void fe_tray_set_tooltip (const char *text);
-void fe_tray_set_balloon (const char *title, const char *text);
 void fe_open_chan_list (server *serv, char *filter, int do_refresh);
 const char *fe_get_default_font ();
 

src/common/outbound.c

@@ -3470,12 +3470,6 @@ cmd_topic (struct session *sess, char *tbuf, char *word[], char *word_eol[])
 static int
 cmd_tray (struct session *sess, char *tbuf, char *word[], char *word_eol[])
 {
-	if (strcmp (word[2], "-b") == 0)
-	{
-		fe_tray_set_balloon (word[3], word[4][0] ? word[4] : NULL);
-		return TRUE;
-	}
-
 	if (strcmp (word[2], "-t") == 0)
 	{
 		fe_tray_set_tooltip (word[3][0] ? word[3] : NULL);

src/common/plugin.c

@@ -355,15 +355,11 @@ plugin_kill_all (void)
 
 #ifdef USE_PLUGIN
 
-/* load a plugin from a filename. Returns: NULL-success or an error string */
-
-char *
-plugin_load (session *sess, char *filename, char *arg)
+GModule *
+module_load (char *filename)
 {
 	void *handle;
 	char *filepart;
-	hexchat_init_func *init_func;
-	hexchat_deinit_func *deinit_func;
 	char *pluginpath;
 
 	/* get the filename without path */
@@ -383,6 +379,18 @@ plugin_load (session *sess, char *filename, char *arg)
 		handle = g_module_open (filename, 0);
 	}
 
+	return handle;
+}
+
+/* load a plugin from a filename. Returns: NULL-success or an error string */
+
+char *
+plugin_load (session *sess, char *filename, char *arg)
+{
+	GModule *handle = module_load (filename);
+	hexchat_init_func *init_func;
+	hexchat_deinit_func *deinit_func;
+
 	if (handle == NULL)
 		return (char *)g_module_error ();
 

src/common/plugin.h

@@ -163,6 +163,7 @@ struct _hexchat_plugin
 };
 #endif
 
+GModule *module_load (char *filename);
 char *plugin_load (session *sess, char *filename, char *arg);
 int plugin_reload (session *sess, char *name, int by_filename);
 void plugin_add (session *sess, char *filename, void *handle, void *init_func, void *deinit_func, char *arg, int fake);