#2263: Fix IsLowerCase to take script without upper/lower case distinction into account.

ICSharpCode.Decompiler/IL/Transforms/AssignVariableNames.cs

@@ -165,7 +165,7 @@ namespace ICSharpCode.Decompiler.IL.Transforms
 
 			static bool IsLowerCase(string name)
 			{
-				return name.Length > 0 && char.IsLower(name[0]);
+				return name.Length > 0 && char.ToLowerInvariant(name[0]) == name[0];
 			}
 		}