flash: Fix protected mode issues and invalid registry entires

CleanFlashCommon/RegistryManager.cs

@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
+using System.Text;
 
 namespace CleanFlashCommon {
     public class RegistryManager {
@@ -9,7 +10,7 @@ namespace CleanFlashCommon {
             registryContents = "Windows Registry Editor Version 5.00\n\n" + SystemInfo.FillString(registryContents);
             string filename = Path.GetTempFileName();
 
-            File.WriteAllText(filename, registryContents);
+            File.WriteAllText(filename, registryContents, Encoding.Unicode);
 
             Directory.SetCurrentDirectory(Path.GetDirectoryName(filename));
 

CleanFlashCommon/SystemInfo.cs

@@ -21,7 +21,8 @@ namespace CleanFlashCommon {
             { "${FLASH_64_PATH}", flash64Path.Replace(@"\", @"\\") },
             { "${VERSION}", version },
             { "${VERSION_PATH}", versionPath },
-            { "${VERSION_COMMA}", versionComma }
+            { "${VERSION_COMMA}", versionComma },
+            { "${ARCH}", Environment.Is64BitOperatingSystem ? "64" : "32" }
         };
 
         public static string GetSystem32Path() {

CleanFlashCommon/Uninstaller.cs

@@ -15,7 +15,7 @@ namespace CleanFlashCommon {
             "flashplayerapp", "flashplayer_sa", "flashplayer_sa_debug",
             // Browsers that might be using Flash Player right now
             "opera", "iexplore", "chrome", "chromium", "brave", "vivaldi", "basilisk", "msedge",
-            "seamonkey", "palemoon", "plugin-container"
+            "seamonkey", "palemoon", "k-meleon", "plugin-container"
         };
 
         static Uninstaller() {