Small cleanup (join declarations)

VocaluxeLib/Menu/CMenuParty.cs

@@ -26,7 +26,7 @@ namespace VocaluxeLib.Menu
     {
         protected IPartyMode _PartyMode;
 
-        public CMenuParty()
+        protected CMenuParty()
         {
             _PartyMode = new CPartyModeNone();
         }

VocaluxeLib/Menu/CSelectSlide.cs

@@ -556,7 +556,7 @@ namespace VocaluxeLib.Menu
             _ValueBounds.Clear();
         }
 
-        public void AddValues(string[] values)
+        public void AddValues(IEnumerable<string> values)
         {
             foreach (string value in values)
                 _AddValue(value, new STexture(-1), _PartyModeID);

VocaluxeLib/Menu/CXMLReader.cs

@@ -141,7 +141,7 @@ namespace VocaluxeLib.Menu
             return values;
         }
 
-        public List<string> GetAttributes(string cast, string attribute)
+        public IEnumerable<string> GetAttributes(string cast, string attribute)
         {
             List<string> values = new List<string>();
 
@@ -180,11 +180,10 @@ namespace VocaluxeLib.Menu
 
         public bool ItemExists(string cast)
         {
-            XPathNodeIterator iterator;
             int results = 0;
 
             _Navigator.MoveToFirstChild();
-            iterator = _Navigator.Select(cast);
+            XPathNodeIterator iterator = _Navigator.Select(cast);
 
             while (iterator.MoveNext())
                 results++;

VocaluxeLib/Menu/IMenu.cs

@@ -86,7 +86,7 @@ namespace VocaluxeLib.Menu
 
         int GetCoverSize();
 
-        List<string> GetSongFolder();
+        IEnumerable<string> GetSongFolder();
         ESongSorting GetSongSorting();
         EOffOn GetTabs();
         EOffOn GetIgnoreArticles();

VocaluxeLib/Menu/SingNotes/CNotes.cs

@@ -707,7 +707,6 @@ namespace VocaluxeLib.Menu.SingNotes
         public void UpdateTimings()
         {
             CNote lastNote;
-            int min, max, s;
 
             if (_Lines.Count > 0)
                 _Lines[0].StartBeat = -10000;
@@ -719,9 +718,10 @@ namespace VocaluxeLib.Menu.SingNotes
 
                 if ((lastNote != null) && (firstNote != null))
                 {
-                    min = lastNote.EndBeat;
-                    max = firstNote.StartBeat;
+                    int min = lastNote.EndBeat;
+                    int max = firstNote.StartBeat;
 
+                    int s;
                     switch (max - min)
                     {
                         case 0:

VocaluxeLib/Menu/SingNotes/CSingNotes.cs

@@ -74,7 +74,7 @@ namespace VocaluxeLib.Menu.SingNotes
         /// </remarks>
         public SRectF[,] BarPos { get; set; }
 
-        public CSingNotes(int partyModeID)
+        protected CSingNotes(int partyModeID)
         {
             _PartyModeID = partyModeID;
             _Theme = new SThemeSingBar();

VocaluxeLib/Menu/SongMenu/CSongMenuFramework.cs

@@ -234,7 +234,7 @@ namespace VocaluxeLib.Menu.SongMenu
             _Visible = visible;
         }
 
-        public CSongMenuFramework(int partyModeID)
+        protected CSongMenuFramework(int partyModeID)
         {
             _PartyModeID = partyModeID;
             _Theme = new SThemeSongMenu