i386 biarch support for lenny

[Matthias Klose <doko@cs.tu-berlin.de>]

The i386 biarch toolchain is built as biarch toolchain; the value of
this is currently doubtful, because you only can use it in an i386
chroot on a machine running a 64bit kernel in the host system.  With
newer compiler versions apparently more hacks are needed to even build
the biarch GCC, it currently ftbfs on a 32bit kernel (snapshot) on
i386 and powerpc (afaik all our powerpc and i386 buildds run 32bit
kernels).  Do we still want to support the i386 biarch toolchain?  If
yes, the minimum support for that would be an amd64 kernel for the
i386 architecture which is used on the buildds.  Please could the
kernel team first check the possibility of such an kernel?

  Matthias