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 IA-64-specific values

 CT_DoArchValues() {

     # The architecture part of the tuple:

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

 }