Increase _POSIX_C_SOURCE to 200112L
Increase _POSIX_C_SOURCE to 200112L

CLOCK_MONOTONIC appeared in IEEE Std. 1003.1-200x, it was not part of
POSIX.1b (the 1993 version), and FreeBSD treats it accordingly.

1ace/sway,SirCmpwn/sway,ascent12/sway,1ace/sway,ascent12/sway,ascent12/sway,1ace/sway