No need to expand tab to spaces when finding inline diff positions

Based on TortoiseSVN revision 25610

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

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Add editorconfig-core-c library as submodule

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
TortoiseGitMerge: Add CEditorConfigWrapper class which calls editorconfig

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Use EditorConfig tabwidth and indentstyle settings

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