date 5.x-1.2

Version 1.2
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#89097 reverse sign on option delta, fix view tablename aliases
#114265 handle empty 'to' date values by filling with 'from' date
Fix block view of date browser, use new CCK views table alias.
#80592 alter default value handling to match changes in CCK, display blank value
as default for to date if not required, make sure blank value is stored as NULL