Replaced using strptime() with strtoul() to parse date and time
Replaced using strptime() with strtoul() to parse date and time

* Replaced using strptime() with strtoul() to parse date and time values for newlib.
The strptime() works incorrectly on some newlib for embedded devices.

* Fixed to be passed unit-tests.
jacketizer/libnmea,jacketizer/libnmea