update git-svn

Signed-off-by: Fuang.Cao <cavan.cfa@gmail.com>
update git-svn

Signed-off-by: Fuang.Cao <cavan.cfa@gmail.com>
fixup git-svn-repo problems

Signed-off-by: Fuang.Cao <cavan.cfa@gmail.com>
update alias

Signed-off-by: Fuang.Cao <cavan.cfa@gmail.com>
git-svn-repo remove empty project from manifest.xml

Signed-off-by: Fuang.Cao <cavan.cfa@gmail.com>
don't treat a error when commit failed if nochange

Signed-off-by: Fuang.Cao <cavan.cfa@gmail.com>