TODO: [ 1460517 ] Use default settings from HKLM in registry

TODO: [ 1460517 ] Use default settings from HKLM in registry

Fixed the following problems:

1) After installing WinMerge, WinMerge's interface language is not
Japanese but English.

2) WinMerge icon is not shown on Quick Launch bar.

3) After uninstalling WinMerge, the registry key
'HKEY_CURRENT_USER/Software/Thingamahoochie/WinMerge' is not deleted.

4) and I also noticed that TortoiseCVS and TortoiseSVN integrations have
not been worked now.