./configure: enable user to specify path to some tools

/trunk/configure | 203 107 96 0 +++++++++++++++++++++++++++++++++-----------------------------
1 file changed, 107 insertions(+), 96 deletions(-)

# Compute Alpha-specific values

CT_DoArchTupleValues () {

    # The architecture part of the tuple:

    CT_TARGET_ARCH="${CT_ARCH}${CT_ARCH_ALPHA_VARIANT}"

    # The kernel ARCH:

    CT_KERNEL_ARCH=${CT_ARCH}

}