GitLab

simplify processor data accounting (add CPUData structure)
remove Process_clone trick

contributed by Ian Hands

Reduces resulting code size.

When user threads are hidden, process now shows the
sum of processor usage for all processors. When user
threads are displayed, each thread shows its own
processor usage, including the root thread.
(thanks to Bert Wesarg for the report)
Also, add option to display thread colors differently.

(minor modifications: default to false, add help)

Linux console because of slow update of unaccelerated fb