Since everything uses the same warning number, the old setup resulted in [[deprecated]] being silenced.
So this explicitly adds the needed #defines to silence the very noisy warning from the MSVC headers but leaves warning 4996 active otherwise.
In particlular this does:
* silence all warnings in the subprojects
* do not derive TIterator from std::iterator anymore as C++17 deprecates this.
* silence the above for RapidJSON because altering that code is not desirable.
* explicitly disable warning 4996 in some Windows files that call the deprecated (but still needed) GetVersionEx function.
* define _CRT_SECURE_NO_DEPRECATE, _CRT_SECURE_NO_WARNINGS and _CRT_NONSTDC_NO_WARNINGS through CMake to disable the CRT's deprecation and security warnings.
Currently this will print several (intended) deprecation warnings about 'updatesector' that point to code that needs to be changed but cannot yet without other refactorings being done first.
Since this not only crashes but also has totally unfitting lighting, which is unlikely to be fixed it really makes no sense offering this to the users.
Vulkan may also have to be disabled for release builds because it's not working yet but that needs to be fixed later and should eventually be supported.
Note: enet uses 'malloc' and 'free' as field names in a struct - this does not work with any compiler using some sort of heap instrumentation that #defines these names!
This had to be changed to allow MSVC debug builds to compile again.
Currently this only contains the main Polymost shaders and the resources from nblood.pk3.
The latter cannot be used yet because the Build resource management system is too stubborn to add the newly added file without some changes.
It's better to refactor the entire system instead.
Renamed all elements still referring to zdoom.
removed the frontend specific resource data.
fixed startup dialog to accept ANSI date despite building as Unicode. This needed a bit of hackery because the macros in windowsx.h are not character set sensitive.
The EDuke32 and RedNukem frontends are working, Blood isn't yet.
Notes:
many of the CMake variables and its output still refer to zdoom. Before changing that I wanted to make sure to be able to commit something that works.
support code for Windows XP has been entirely removed. On Windows this will only target Vista and up.
the crc32.h header had to be renamed to deconflict from zlib.
several Windows API calls were changed to call the A-versions directly. Weirdly enough there were places that defined their parameters as T types but in a non-working way.
removed some remaining editor files and support for the native software rendering only Windows backend.
in a few simple cases, replaced 'char' with 'uint8_t'. The code as-is depends on chars being unsigned which is non-portable. This needs to be carefully reviewed.
