pgsql: pg_dump: Dump operators with the same name ordered by arity

pg_dump: Dump operators with the same name ordered by arity

pg_dump sorts operators by name, but operators with the same name come
out in random order. Now operators with the same name are dumped in
the order prefix, postfix, infix. (This is consistent with functions,
which are dumped in increasing number of argument order.)

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/15df037845d9d3d99e9e2b4370256b136b00c66a

Modified Files
--------------
src/bin/pg_dump/pg_dump.c | 6 ++++++
src/bin/pg_dump/pg_dump.h | 1 +
src/bin/pg_dump/pg_dump_sort.c | 10 ++++++++++
3 files changed, 17 insertions(+), 0 deletions(-)