Remove all traces of the Galileo board.  That port is not going to happen -- I dont' even have the Galileo board anymore.

ix an error in time initialization when there is not RTC and the time is initialized from a fixed configured value. The call to clock_calendar2utc() was returning the time in units of seconds.  The initialization logic, however, was expecting to get time in units of days.

localtime:  Default zoneinfo directory is /etc/zoneinfo instead of /usr/local/etc/zoneinfo which results in a longer pathname than the default 32 characer MAX

Allow NSH date command with no RTC.  This command is useful without an RTC too.  Also, this permits testing on the simulator which never has an RTC