[sdl2] Update to 2.0.16

[RT2Code]

Update the SDL2 port from 2.0.14 to 2.0.16 :
https://github.com/libsdl-org/SDL/releases/tag/release-2.0.16

I removed three files :

• 0003-sdl2-fix-uwp-build.patch because it was merged upstream : libsdl-org/SDL@d54b125
• 0004-sdl2-macos-thread-detection-fix.patch because they fixed pthread detection on MacOS : libsdl-org/SDL@89a2980
• vcpkg-cmake-wrapper.cmake because it was not compatible with the changes they made to the SDL2Config.cmake file. I replaced it with a new patch borrowed from this PR : Alias SDL2::SDL2 to SDL2::SDL2-static on static-only builds libsdl-org/SDL#4502

I was able to build with the Vulkan feature with success on Windows.

[BillyONeal]

Pushed merge with master because the VMs for the running validation build are being removed.

[github-actions]

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After committing all other changes, the version database must be updated

git add -u && git commit
git checkout e22f9d7d70e61b8b0cfe1c0adacee69bf6f8365b -- versions
./vcpkg x-add-version --all

Diff

diff --git a/versions/s-/sdl2.json b/versions/s-/sdl2.json
index 6609a08..5efb1b2 100644
--- a/versions/s-/sdl2.json
+++ b/versions/s-/sdl2.json
@@ -1,8 +1,8 @@
 {
   "versions": [
     {
-      "git-tree": "fec1e07ad2ee9d71c23fc559f37031206ef1577c",
-      "version-semver": "2.0.16",
+      "git-tree": "e4023279ca9be302f9425b24f2a5eacad1c003ad",
+      "version": "2.0.16",
       "port-version": 0
     },
     {

[RT2Code]

Finally, the commit history is a mess, but I think I got it right. On UWP, I had to remove the static libs definition in the pkgconfig file and to disable the SDL2main target lookup in SDL2Config.cmake because we don't ship the sdl2main on this platform.

[JonLiu1993]

FeATURE vulkan tested successfully in the following triplet:

• x86-windows
• x64-windows
• x64-windows-static