TortoiseUDiff -> TortoiseGitUDiff

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
TortoiseGitUDiff is a product of TortoiseGit, though most code comes from TortoisSVN

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
TortoiseGitIDiff is a product of TortoiseGit, though most code comes from TortoisSVN

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