CMakeDetermineVSServicePack: Format documentation

Also state explicitly that the module is deprecated.
CMakeDetermineVSServicePack: Match versions more robustly

Use the CMAKE_MATCH_* variables to simplify matching logic.  Match
either 3 or 4 version components.  Do not fail when there are only three
components available.
CMakeDetermineVSServicePack: Add VS 11 update 4
Merge topic 'CMakeDetermineVSServicePack-vs-11-update-4' into next

f0de3f80 CMakeDetermineVSServicePack: Add VS 11 update 4
105658df CMakeDetermineVSServicePack: Match versions more robustly
101515b9 CMakeDetermineVSServicePack: Format documentation