 * Reorganize the main program a bit.  * Correct the data types for variables that will be manipulated from    signal handlers (the C standard requires volatile sig_atomic_t).
 * Reorganize the main program a bit.
 * Correct the data types for variables that will be manipulated from
   signal handlers (the C standard requires volatile sig_atomic_t).

kbyanc/dyntrace,kbyanc/dyntrace