git (git-bash.exe): fix the ConHost fallback with arguments
git (git-bash.exe): fix the ConHost fallback with arguments

Due to `cmd.exe`'s quirky quoting rules, we need to make use of the `/S`
option -- and use the `APPEND_QUOTE` option introduced into the Git
wrapper for this very purpose.

This is (2/3) to fix https://github.com/git-for-windows/git/issues/396

Signed-off-by: Johannes Schindelin <53fb8db7833fca1e1746dd8592f61048d350f64c@gmx.de>

git-for-windows/MINGW-packages,dscho/MINGW-packages,dscho/MINGW-packages,dscho/MINGW-packages,dscho/MINGW-packages,git-for-windows/MINGW-packages,dscho/MINGW-packages,git-for-windows/MINGW-packages