Rename test to associated class
parseDateOrTime returns UNPARSEABLE instead of throwing
More parseDateOrTime cleanup and consistency
Overload consolidation and test getLastDay
Move TimeZone parsing to MDatetimes, use parseDateOrTime for parseDateTime and fix convert_tz
Fix cast of bigint to date, datetime. Fix a couple badly formatted warnings.
CastPath from int to dates via bigint
Much cleanup around checking of valid (non-zero) dates.

Fix and test TO_SECONDS, TO_DAYS and TIME_TO_SEC.
More cleanup and consolidatino around TIMESTAMP
Use parseDateOrTime for TIMESTAMP too
Rename
Consistency
Fix adjustYear
Cleaner YEAR() testing
More FROM_DAYS testing
Proper padding
Remove unnecessary intermediate class
Update expected costs
merge nathanlws: Massive MDatetimes cleanup

Merge pull request #1195 from nathanlws/sql-layer/mdatetimes-cleanup
https://github.com/FoundationDB/sql-layer/pull/1195