Merge topic 'MsvcDebugInformationFormatAbstraction'

a858466aac MSVC: Add test for debug information format
0e96a20478 MSVC: Add abstraction for debug information format
d4c8111da4 Clang/Windows: Clarify name of internal runtime library flags variables

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !7606