internals: fix stripping canadians

We can't run the newly built gcc when it is a canadian cross.
Thus, we can't get the version number, and thus we can't get
the directory libexec subdirectory to strip.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

# Compute sparc-specific values

CT_DoArchTupleValues() {

    # That's the only thing to override

    if [ "${CT_ARCH_64}" = "y" ]; then

        CT_TARGET_ARCH="${CT_ARCH}64"

    fi

}