v2: - move _gmtime64_s() definition to include/msvcrt/time.h; - use win_skip() in ucrtbase/tests/misc.c; - remove added (time) debug channel and log to default (msvcrt) and in _gmtime64_s(); - remove a spurious newline; - add tests for _gmtime32 / _gmtime32_s with the same negative values and remove checks for negative values in implementation.