Bring in alignment and colorization changes from DragonFly branch

The following changes are accomplished
  - square brackets were removed from timestamps
  - The arrow was changed from ====>> to =>
  - Most of the arrows were decolored
  - On the build summary, the color was limited to the values
  - The build summary was split into 3 lines
  - build summary labels changed to "Initially" and "Remaining", largely
    for alignement reasons but also thought to be more intuitive
  - Siginfo reformed to gain 13 characters for origin (2-char margins)
  - Siginfo now aligns 3-field lines with 5-field lines
  - Log lines reworded to fit in 8-char field so everything lines up
Bring in color selection from DragonFly branch

Brighter hues were selected for:
  - Success
  - Fail
  - Error
  - origin

The phase was changed from light magenta to dark gray.  For -v builds,
this enables success and failures to really stand out.

The builder ID colors were rearranged to put brigher pastels on the
first 7 builders.  The second set of seven builders use darker hues
in the same color order as the first set.
Move build summary after sig-handler builder list, stop showing log info

Powerful boxes can have 60 builders or more.  Have the builder summary
come before the builder list just means it scrolls off immediately on
these setups.  To deal with this, move the builder summary to the end,
after the builder list is displayed.

For aesthetic reasons (and debatable utility), remove the display of the
log with the sig-handler.  This line is often greater than 80 characters
and wraps around on consoles.