This would hopefully fix some comctl32 test failures which started happening after I changed my nightly winetest runs to build Wine with Clang.
-- v2: winegcc: Force default subsystem version to MSVC modern values. user32/tests: Force console subsystem version 5.2. quartz/tests: Force console subsystem version 5.2. dxgi/tests: Force console subsystem version 5.2. comctl32/tests: Force console subsystem version 5.2. winegcc: Support subsystem version number in link.exe-style cmdline. winegcc: Consistently use the subsystem option with Clang and MinGW.