Fixed issue #2172: Support num parameters of git blame -M and git blame -C

Signed-off-by: Martin Strauß <MStrauss@MuellerBBM-vas.de>
Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Added missing documentation for the TortoiseGitBlame settings page

(Fixes issue #2173)

Signed-off-by: Martin Strauß <MStrauss@MuellerBBM-vas.de>
Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Drop unused buffer

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Optimize comment about discouraged branch names starting with a dash

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Do not call IsBranchTagNameUnique with empty parameter

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Merge branch 'blame-c'