* cygheap.h (init_cygheap::_gtod): Remove.

* cygheap.h (init_cygheap::_gtod): Remove.
* cygwin.din: Export clock_getres and clock_setres.
* hires.h (hires_ms::minperiod): Delete declaration.
(hires_ms::began_period): Ditto.
(hires_ms::prime): Make void.
(hires_ms::resolution): Just define here.
(hires_ms::usecs): Remove unneeded argument.
(gtod): Redeclare as a variable.
* timer.cc (timer_thread): Eliminate argument to gtod.usecs().
(timer_tracker::gettime): Ditto.
(timer_tracker::settime): Ditto.
* times.cc (gettimeofday): Ditto.
(hires_ms::began_period): Delete declaration.
(hires_us::prime): Remove debugging.
(hires_ms::prime): Make void.  Eliminate period stuff.
(hires_ms::usecs): Eliminate argument to gtod.usecs().
(hires_ms::resolution): New function.
(clock_getres): Ditto.
(clock_setres): Ditto.
* version.h: Bump API version to 143.
* include/cygwin/time.h: New file.