Add analogue of --seccomp-bpf as a way to speed up syscall matching

[qrilka]

See e.g. description at https://pchaigno.github.io/strace/2019/10/02/introducing-strace-seccomp-bpf.html#fnref:seccomp-ebpf

[qrilka]

Very basic demo of speed improvements in strace:

qrilka@qdesktop ~ $ time strace -c -e openat head -1000000 /dev/urandom > /dev/null
% time     seconds  usecs/call     calls    errors syscall
------ ----------- ----------- --------- --------- ----------------
  0,00    0,000000           0        12         5 openat
------ ----------- ----------- --------- --------- ----------------
100.00    0,000000                    12         5 total

real	0m2,187s
user	0m0,495s
sys	0m1,838s
qrilka@qdesktop ~ $ time strace -c --seccomp-bpf -e openat head -1000000 /dev/urandom > /dev/null
strace: --seccomp-bpf implies -f
% time     seconds  usecs/call     calls    errors syscall
------ ----------- ----------- --------- --------- ----------------
  0,00    0,000000           0        12         5 openat
------ ----------- ----------- --------- --------- ----------------
100.00    0,000000                    12         5 total

real	0m1,130s
user	0m0,212s
sys	0m0,918s

[nh2]

Nice!