pgsql: Fix various infelicities in node functions.

Fix various infelicities in node functions.

Mostly, this consists of adding support for fields which exist in the
structure but aren't handled by copy/equal/outfuncs; but the create
foreign table case can actually produce garbage output.

Noah Misch

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/53bbc681ca97650a4b8ea59d8f1710196654fca5

Modified Files
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src/backend/nodes/copyfuncs.c  |    2 ++
src/backend/nodes/equalfuncs.c |    3 +++
src/backend/nodes/outfuncs.c   |   19 ++++++++++++++-----
3 files changed, 19 insertions(+), 5 deletions(-)