Backport #878 from trunk:
Fix building x86_64 on x86_64 (and hopefully all other *64 archs on the same *64).

/branches/1.2/scripts/build/cc_gcc.sh | 26 0 26 0 --------------------------
/branches/1.2/scripts/crosstool.sh | 14 14 0 0 ++++++++++++++
2 files changed, 14 insertions(+), 26 deletions(-)

# Compute IA-64-specific values

CT_DoArchValues() {

    # The architecture part of the tuple:

    CT_TARGET_ARCH="${CT_ARCH}${target_endian_el}"

    # Override CFLAGS for endianness:

    case "${CT_ARCH_BE},${CT_ARCH_LE}" in

        y,) CT_ARCH_ENDIAN_CFLAG="-EB";;

        ,y) CT_ARCH_ENDIAN_CFLAG="-EL";;

    esac

}