Thread: pgsql: Teach nodeSort and nodeMaterial to optimize out unnecessary

Log Message:
-----------
Teach nodeSort and nodeMaterial to optimize out unnecessary overhead
when the passed-down eflags indicate they can.
Simon Riggs and Tom Lane

Modified Files:
--------------
    pgsql/src/backend/executor:
        nodeMaterial.c (r1.52 -> r1.53)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeMaterial.c.diff?r1=1.52&r2=1.53)
        nodeSort.c (r1.54 -> r1.55)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeSort.c.diff?r1=1.54&r2=1.55)
    pgsql/src/include/nodes:
        execnodes.h (r1.147 -> r1.148)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/nodes/execnodes.h.diff?r1=1.147&r2=1.148)