Update Scintilla to v3.4.1

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Applied backgroundcolors.patch

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Merge branch 'scintilla'
Update documentation

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Update tagopt meaning in Git Remote Settings documentation

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Add use case of tagopt=--tags

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