Windows bundles based on ESR 68 are not built reproducibly
As mentioned in comment:20:ticket:28238 we have files that are not built reproducibly with the new mingw-w64-clang toolchain. It affects not all binaries, though, only firefox.exe, libGLESv2.dll, mozglue.dll, plugin-container.exe, plugin-hang-ui.exe, and xul.dll.
This is still an issue after switching to clang, lld etc. 8.0.0.
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