[samples] Don't mix canadian samples with non-canadian ones.

- save the canadian smples in their own way, so as not to
mix non-canadian samples with canadian ones
- list canadian samples with the host information

 # Compute IA-64-specific values

 CT_DoArchTupleValues() {

     # The architecture part of the tuple:

     CT_TARGET_ARCH="${CT_ARCH}"

 }