In 32bit app, Poco::Environment::osArchitecture returns 32bit on 64bit OS

[RangelReale]

When calling Poco::Environment::osArchitecture in a 32bit app running on a 64bit OS, it returns IA32.

The GetNativeSystemInfo function should be used instead of GetSystemInfo for this to work, but this API is only available on Windows NT or higher.

[obiltschnig]

This is somewhat problematic to fix, as there is some code that uses osArchitecture() to find out which version of DLL to load. Returning AMD64 in that case would break that. IMO that behavior is correct, as from the POV of the application, the OS is 32 bit. Probably a new method, nativeOSArchitecture() would be necessary.