smartftp: added KB2670838 dependency
smartftp: added KB2670838 dependency

SmartFTP depends on KB2670838 on Windows 7, Windows Server 2008 R2.
lennartb-/chocolatey-coreteampackages,AdmiringWorm/chocolatey-coreteampackages,lennartb-/chocolatey-coreteampackages,AdmiringWorm/chocolatey-coreteampackages,octomike/chocolatey-coreteampackages,octomike/chocolatey-coreteampackages