reproducible-builds; bit-for-bit identical binary

Currently msbuild will produce binaries, that are not bit-for-bit identical, even if the source code is identical.
* same source code build on a different day will produce different binaries
* same source code build on a different machine with same compiler and same tools will produce different binaries

It would be very helpful tool for error diagnosis, and build system verification if the binaries would be identical (for the same version of the compiler).

advantages (listed on https://github.com/jasonwhite/ducible):
* confidence that two parties built a binary with the same environment,
* recreating a release bit-for-bit from source code,
* recreating debug symbols for a particular version of source code,
* verifiable and correct distributed builds,
* better caching of builds,
* no spurious changes in binaries under version control.

There is another github project concering this issue:
https://github.com/jasonwhite/ducible
https://reproducible-builds.org/

Start by reviewing the MSBuild build process described in this issue and compare it with the ducible project and reproducible-builds.org. Identify which build inputs vary across dates and machines, then define success as identical binaries for identical source, compiler, and tools.

Written by the indexing model from the issue text.