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4 check-ins related to "dead-end"

Attempt to parse the NULLS LAST clause more efficiently. A few cycles were saved, but at the expense of more code. And there is a bug was introduced somewhere. Not worth continuing down this line. Closed-Leaf check-in: 12d2cf88 user: drh tags: dead-end
Move some things in parse.y so that TK_COLUMN and TK_AGG_COLUMN are assigned the same values as they are on trunk for a very small speedup. check-in: d26fdfa3 user: dan tags: nulls-last
Attempt to optimize the resolveExprStep() routine by mapping Expr opcodes into a subset of opcodes that resolveExprStep() cares about and only calling the routine when those opcodes are encountered. Is slightly faster, but it seems like the very slight performance bump is not worth the added complexity. Saved on a dead-end branch for historical reference. Closed-Leaf check-in: bad4d7a0 user: drh tags: dead-end
Update the version number to 3.25.0 for the next development cycle. check-in: 7598236c user: drh tags: trunk