Thread: pgsql: Code review for EXPLAIN patch.

Log Message:
-----------
Code review for EXPLAIN patch.  Fix some typos, make it behave sanely
across multiple loops, get rid of the shaky assumption that exactly one
tuple is returned per node iteration.

Modified Files:
--------------
    pgsql/src/backend/executor:
        instrument.c (r1.15 -> r1.16)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/instrument.c.diff?r1=1.15&r2=1.16)
    pgsql/src/include/executor:
        instrument.h (r1.14 -> r1.15)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/executor/instrument.h.diff?r1=1.14&r2=1.15)