UE4.1 VS deletes Android dlls as junk, no Linux package option

I am having this issue on UE 4.4 on Windows, for Windows targets, with a clean source install.

Every Android DLL and HTML5 DLL is deleted and linked again when I compile my project, making trivial changes a lengthy process (one minute of build for a line changed in a cpp file). Hitting F7 with no actual change will still launch a 30s process of rebuilding DLLs that I don’t need.

Are you really saying that I need to install Android’s NDK, which I couldn’t care less about, to get decent build times for Windows games ? When will this be fixed ?