[fpc-pascal] Can not cross compile from Win64 to Win32 using fpcup

[Marco van de Voort]

In our previous episode, Jonas Maebe said:
> >> 3. run fpcupgui.exe and successfully finished.
> >>    using fpc svn version 2.6.4
> >>    using lazarus svn version 1.2.2
> > FPC 2.6.x does not support cross compiling from win64 to win32 due to
> > the error you found below.
> > AFAIR, it's been fixed in FPC trunk.
> 
> It's not supported in trunk either.

To clarify, there are two issues:

1. Lazarus IDE not behaving properly without SEH (openfiledialog crashing
etc)
2. FPC not supporting   xx => i386 crosscompiling due to the x86 codegen
   using extended which is not support on non x86. (needs softfpu)