BUGFIX: Fix display of CPU count for threaded processes.

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.

CRT.h

@@ -70,6 +70,8 @@ typedef enum ColorElements_ {
    PROCESS_BASENAME,
    PROCESS_HIGH_PRIORITY,
    PROCESS_LOW_PRIORITY,
+   PROCESS_THREAD,
+   PROCESS_THREAD_BASENAME,
    BAR_BORDER,
    BAR_SHADOW,
    GRAPH_1,