ms-sbvar: submodule update, #304
(cherry picked from commit 6ad3ac9f2c1a80a0edf97d42d31e5cddf04755a1)
ms-sbvar: support ctrl-c changes in submodule, #304
(cherry picked from commit a8d07308a9452f1f0ea782f3576921d9e16f3ede)