fbbe8aba9d introduced a check for
MSVC_VER to qmake, which is not set in win32-clang-msvc,
causing the build to fail:
Mkspec does not specify MSVC_VER. Cannot continue.
Unable to generate output for: .../config.tests/verifyspec/Makefile
Extract a minimal msvc-based-version.conf which determines
MSVC_VER from QMAKE_MSC_VER for win32-clang-msvc and win32-icc.
Task-number: QTBUG-63512
Change-Id: Ia6de8c4b1aae2ae1962cf4e60e3e6d51fdbbbabe
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
