ASF is AnyCPU binary which means it'll run fine on both 32-bit as well as 64-bit OSes.
Up to today 32-bit runtime was preferred for ASF, as it uses less memory and can be faster than 64-bit equivalent.
However, in very busy environments it's easily possible for ASF to require even more than 2 GB of memory, and in addition to that extending our userspace to 64-bit can bring benefits on more modern setups.
Therefore, keep being compatible on both 32-bit and 64-bit OSes, but on 64-bit ones use actual 64-bit runtime instead of preferred 32-bit one.
In addition to that, optimize some unused references and other things while we're at it.
This reverts commit b64491e284.
Didn't fix the issue as mcs.exe is bugged as well, I'll just live with Mono weekly being broken and unreliable ¯\_(ツ)_/¯
Indeed LibZ seems to not being functional on Mono, so we keep using ILRepack for Mono, and LibZ for Windows
Final binary is compiled on Windows anyway, and it seems to work properly on both Windows and Mono, so this is purely for making people using self-compiled binaries happy
We tried ILMerge, we tried ILRepack, so now maybe LibZ will do it's thing?
The objective is solving false-positives of AVs, it might get reverted if there is no improvement
