CVSROOT:	/cvsroot
Module name:	pgsql-server
Changes by:	tgl(at)postgresql(dot)org	02/12/13 19:17:59

Modified files:
	src/backend/commands: explain.c 
	src/backend/executor: execAmi.c execProcnode.c execQual.c 
	                      nodeSubplan.c 
	src/backend/nodes: copyfuncs.c equalfuncs.c outfuncs.c 
	                   readfuncs.c 
	src/backend/optimizer/path: costsize.c 
	src/backend/optimizer/plan: planner.c setrefs.c subselect.c 
	src/backend/optimizer/prep: prepunion.c 
	src/backend/optimizer/util: clauses.c var.c 
	src/backend/utils/adt: ruleutils.c 
	src/include/executor: executor.h nodeSubplan.h 
	src/include/nodes: execnodes.h nodes.h params.h primnodes.h 
	src/include/optimizer: clauses.h 

Log message:
	Clean up plantree representation of SubPlan-s --- SubLink does not appear
	in the planned representation of a subplan at all any more, only SubPlan.
	This means subselect.c doesn't scribble on its input anymore, which seems
	like a good thing; and there are no longer three different possible
	interpretations of a SubLink.  Simplify node naming and improve comments
	in primnodes.h.  No change to stored rules, though.

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