9c1a0b80ae
Ensure that the /DYNAMICBASE linker option (which is actually the default) is enabled for all of our Visual Studio project builds, as the gtk3-demo projects inadvertly disabled it. Also, for x64 builds on MSVC 2012 or later, enable /HIGHENTROPYVA to enhance the security of our binaries as well. Pointed out by Ignacio Casal Quinteiro.