make paul.dll internal name check non-case-sensitive (#365)

* make paul.dll internal name check non-case-sensitive

Sometimes the internal name is in all caps, like http://redump.org/disc/115608/ and http://redump.org/disc/47171/

* Added proper import for ignore case

Forgot it wasn't covered by system.text

Author: HeroponRikiBestest

BinaryObjectScanner/Protection/SecuROM.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Text;
 using BinaryObjectScanner.Interfaces;
 using SabreTools.Matching;
@@ -19,7 +20,7 @@ public class SecuROM : IExecutableCheck<PortableExecutable>, IPathCheck
                 return $"SecuROM Product Activation v{pex.GetInternalVersion()}";
 
             name = pex.InternalName;
-            if (name.OptionalEquals("paul.dll"))
+            if (name.OptionalEquals("paul.dll", StringComparison.OrdinalIgnoreCase))
                 return $"SecuROM Product Activation v{pex.GetInternalVersion()}";
             else if (name.OptionalEquals("paul_dll_activate_and_play.dll"))
                 return $"SecuROM Product Activation v{pex.GetInternalVersion()}";