Add include/lapi/posix_clocks.h and make use of it

Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
clock_getres/clock_getres01.c: add new clockids

add new clockids:
CLOCK_MONOTONIC_RAW
CLOCK_REALTIME_COARSE
CLOCK_MONOTONIC_COARSE
CLOCK_BOOTTIME
CLOCK_REALTIME_ALARM
CLOCK_BOOTTIME_ALARM

Signed-off-by: Zeng Linggang <zenglg.jy@cn.fujitsu.com>
Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
clock_getres/clock_getres01.c: Finish the cleanup

* Cleanup the GPL headers

* Add standard option parsing code

Signed-off-by: Cyril Hrubis <chrubis@suse.cz>