issue #2437: Fix Bug RenderTextureTestDepthStencil not clipped by stencil
close #2437: replace stencil mechanism with a new approach by removing glColorMask call
Merge pull request #3318 from dabingnn/Iss2437-RenderTextureStencilTest-Bug

Iss2437 render texture stencil test bug
[emscripten] Fixing compilation errors.
Merge pull request #3321 from dumganhar/develop

[emscripten] Fixing compilation errors.
added emscripten keyboard support
Re-use SAFE_HEAP option in emscripten.