Add TCK creation and diff from zero events
- create a new subdirectory zeroevents with createtck1 and createtck2 tests, and then diffs for Hlt1 and Hlt2 TCKs, with respect to the nominal ones.
- remove
hundredevents.qmt
,oneevent.qmt
andzeroevents.qmt
(replaced) - remove
zfromxtck.qmt
- See LHCBPS-1440