Skip the fast checks to ensure we detect the null bytes of an utf16 encoded file properly

Based on TortoiseSVN revision 25453

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Add "Start registry editor" button in Overlay Handlers Settings

Based on TortoiseSVN revision 22567, 25308, 25459

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
[WIP] Fixed issue #2168: Add to the "Clean up" dialog "Recursive" option for submodules

Current implementation of submodule files cleanup does not support the use of recycle bin

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>