Log Message:
bdf2sfd: update to 1.1.2.

bdf2sfd 1.1.2 (2020-06-10)

- Use CLOCK_REALTIME if CLOCK_MONOTONIC is not available
- Get rid of the runtime variable, it is only used once
- Remove duplicate <string.h> include
- Add missing <stdio.h> include
- Add <stdint.h> include instead of <inttypes.h>
- Define _GNU_SOURCE in CMakeLists.txt to avoid cluttering source files
- Add ENABLE_SECCOMP build option, to allow building seccomp support
- Add initial seccomp support to BDF2SFD