[QA] Bad error message with architecture mismatch on Windows

[jnweiger]

Seen with 2.7.5rc2 on a 32bit installation of Windows 8.1

The 32bit client installs fine, (left)
The 64bit client produces an error messge (right)

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The error message is misleading:
a) the processor type fine. The system is 32bit - that is the problem.
b) the product vendor should not be contacted. - we deliverer binaries for both already.

Expected behaviour: "You are trying to install a 64bit client on a 32bit system. This is not supported."

[TheOneRing]

Nothing we can change. That's Windows.