LibreOffice 3.6.2 RC 2

# Bugs fixed
* clear DataColumns read-only information when we clear DataColumns
* fix crash in SwXTextSection::attach:
* protect against negative calculated height value
* exception while importing xlsx.
* do not consider timestamp differences as corruption
* rows with cond formats don't have empty background
* displaying help/version early on UNX requires service manager
* shrink to used area for duplicate codn format
* displaying help/version early on UNX requires service manager
* fix crash when updating conditional formats
* broadcaster cells are empty
* exception while importing xlsx.
* rows with cond formats don't have empty background
* don't add old cond formats if new ones are already loaded
* use correct cell for broadcasting
* import values and formulas from lotus-123