Switch some date/timestamp functions to use the soft error reporting
This commit changes some functions related to the data types date and
timestamp to use the soft error reporting rather than a custom boolean
flag called "overflow", used to let the callers of these functions know
if an overflow h
Move WAL sequence code into its own file
This split exists for most of the other RMGRs, and makes cleaner the
separation between the WAL code, the redo code and the record
description code (already in its own file) when it comes to the sequence
RMGR. The redo and masking routines are moved to a n
