pgsql: Fix allocation of RW-conflict pool in the new predicate lock man

Fix allocation of RW-conflict pool in the new predicate lock manager, and
also take the RW-conflict pool into account in the PredicateLockShmemSize()
estimate.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/036bb15872fa52f6f403ca22d36a8652bbaf9d3c

Modified Files
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src/backend/storage/lmgr/predicate.c |   10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)