GSoC Microproject: add %clock trace class

[Ákos Uzonyi]

Hi,

As my microproject I would like to extend "-e trace=" option with a
new class: %clock. This class would contain syscalls that read, or
modify the system clocks.

On x86 I think the following syscalls should be included:
adjtimex
clock_adjtime
clock_getres
clock_gettime
clock_settime
gettimeofday
settimeofday
time

Please share your thoughts.

Thanks,
Akos