Better explain why populate exists.
New entry for how to add a new component version.
Some homogeneisation in style.

/trunk/docs/overview.txt | 44 30 14 0 ++++++++++++++++++++++++++++++--------------
1 file changed, 30 insertions(+), 14 deletions(-)

# Compute x86_64-specific values

CT_DoArchValues() {

    # The architecture part of the tuple:

    CT_TARGET_ARCH="${CT_ARCH}"

}