Add support code for the canadian-cross case.
Add implementation for a candadian build option already
present in crosstool in order to build a cross-compiler
where build != host != target
Signed-off-by: Bart van der Meulen <bartvdrmeulen@gmail.com>
1 reporter_name="Nye Liu"
2 reporter_url="http://sourceware.org/ml/crossgcc/2008-10/msg00046.html"