[issue25636] Let launcher autoselect best 32-bit Python on 64-bit system

Changes by Eryk Sun : -- components: +Windows nosy: +paul.moore, steve.dower, tim.golden, zach.ware versions: +Python 3.6 ___ Python tracker ___ _

[issue25636] Let launcher autoselect best 32-bit Python on 64-bit system

New submission from Christian Ullrich: As described in PEP 397, the launcher can autoselect the "best" Python version available on a system, or a full version number (major.minor) can be specified. In the latter case, optionally a "-32" suffix can be given to select a 32-bit version, which is