Change "Artist/Album" view to an "Album" view

Patch taken from
  cmus#535 (comment)

comment.c

@@ -60,6 +60,7 @@ int track_is_compilation(const struct keyval *comments)
 
 int track_is_va_compilation(const struct keyval *comments)
 {
+  /*
 	const char *c, *a, *aa;
 
 	aa = keyvals_get_val(comments, "albumartist");
@@ -77,26 +78,31 @@ int track_is_va_compilation(const struct keyval *comments)
 	c = keyvals_get_val(comments, "partofacompilation");
 	if (c && is_freeform_true(c))
 		return 1;
+  */
 
 	return 0;
 }
 
 const char *comments_get_albumartist(const struct keyval *comments)
 {
+  /*
 	const char *val = keyvals_get_val(comments, "albumartist");
 
 	if (!val || strcmp(val, "") == 0)
 		val = keyvals_get_val(comments, "artist");
 
 	return val;
+  */
+  return "<Various Albums>";
 }
 
 const char *comments_get_artistsort(const struct keyval *comments)
 {
-	const char *val;
+	/*
+  const char *val;
 
 	if (track_is_va_compilation(comments))
-		return NULL;
+     return NULL;
 
 	val = keyvals_get_val(comments, "albumartistsort");
 	if (!track_is_compilation(comments)) {
@@ -106,8 +112,9 @@ const char *comments_get_artistsort(const struct keyval *comments)
 
 	if (!val || strcmp(val, "") == 0)
 		return NULL;
+  */
 
-	return val;
+	return NULL;
 }
 
 int comments_get_int(const struct keyval *comments, const char *key)

tree.c

@@ -519,7 +519,7 @@ static struct artist *artist_new(const char *name, const char *sort_name, int is
 	a->collkey_name = u_strcasecoll_key(a->name);
 	a->collkey_sort_name = u_strcasecoll_key0(a->sort_name);
 	a->collkey_auto_sort_name = u_strcasecoll_key0(a->auto_sort_name);
-	a->expanded = 0;
+	a->expanded = 1;
 	a->is_compilation = is_compilation;
 	rb_root_init(&a->album_root);
 

ui_curses.c

@@ -1014,7 +1014,7 @@ static void update_window(struct window *win, int x, int y, int w, const char *t
 static void update_tree_window(void)
 {
 	update_window(lib_tree_win, tree_win_x, 0, tree_win_w,
-			"Artist / Album", print_tree);
+			"Album", print_tree);
 }
 
 static void update_track_window(void)