[Development] Coin: using 64-bit Windows host for 32-bit builds

[Konstantin Tokarev]

Hello,

I was told that there is some ongoing work to make subject possible.
What is the current status?

It is needed because large projects, namely QtWebEngine and QtWebKit
(wip/next branch) are too large for making 32-bit debug builds on 32-bit OS.
In case of QtWebKit it's possbile to work around this problem by issuing
debug info for API implementation only, however this reduces debuggability.

-- 
Regards,
Konstantin