libsaria: Move update_path() function

Now it's in the library.cpp file.

libsaria/library/library.cpp

@@ -37,6 +37,11 @@ namespace libsaria
 			it->update();
 	}
 
+	void library::update_path(string dir)
+	{
+		get_path(dir)->update();
+	}
+
 	void library::refresh()
 	{
 		trigger_callback(LIBRARY_REFRESH);

libsaria/library/update.cpp

@@ -1,15 +0,0 @@
-
-#include <libsaria/track.h>
-#include <libsaria/library.h>
-#include <libsaria/index.h>
-#include "library.h"
-
-namespace libsaria
-{
-
-	void library::update_path(string dir)
-	{
-		get_path(dir)->update();
-	}
-
-}; /* Namespace: libsaria */