libsaria: Switch to using a list for the queue

A deque won't allow me to remove elements from anywhere in the queue, so
using a linked list is a better choice.

libsaria/queue/file.cpp

@@ -34,7 +34,7 @@ namespace libsaria
 	void queue::save()
 	{
 		OutFile out("queue.q");
-		deque<sid_t>::iterator it;
+		list<sid_t>::iterator it;
 
 		out << playqueue.size() << "\n";
 		for (it = playqueue.begin(); it != playqueue.end(); it++)

libsaria/queue/iter.cpp

@@ -3,7 +3,7 @@
 #include <libsaria/queue.h>
 #include "queue.h"
 
-static deque<sid_t>::iterator it;
+static list<sid_t>::iterator it;
 
 namespace libsaria
 {

libsaria/queue/queue.cpp

@@ -1,6 +1,5 @@
 
 #include <list>
-#include <queue>
 using namespace std;
 
 #include <libsaria/queue.h>
@@ -8,7 +7,7 @@ using namespace std;
 #include <libsaria/callback.h>
 #include "queue.h"
 
-deque<sid_t> playqueue;
+list<sid_t> playqueue;
 
 static void pop_queue(sid_t &inode)
 {

libsaria/queue/queue.h

@@ -3,9 +3,9 @@
 
 #include <libsaria/track.h>
 
-#include <queue>
+#include <list>
 using namespace std;
 
-extern deque<sid_t> playqueue;
+extern list<sid_t> playqueue;
 
 #endif /* LIBSARIA_QUEUE_INTERNAL_H */