main - change t1,t2 to unsigned long
update gpsParse to support empty fields (use xstrtok)
Change Southern Hemisphere fix to WBP's version
add missing xstrtok files
add new check in parseGPSdata() to try to catch data errors
fix error in Auto DST for southern hemisphere (thanks JL!)
Merge branch 'adst_fix' into gps_check
update comments in main.c
Merge branch 'gps_parse_update' into Scroll2