pgsql: Add casts from int4 and int8 to numeric.

Add casts from int4 and int8 to numeric.

Joey Adams, per gripe from Ramanujam. Review by myself and Tom Lane.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/f5e524d92be609c709825be8995bf77f10880c3b

Modified Files
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doc/src/sgml/datatype.sgml | 17 +++++++---
src/backend/utils/adt/cash.c | 62 +++++++++++++++++++++++++++++++++-
src/include/catalog/catversion.h | 2 +-
src/include/catalog/pg_cast.h | 2 +
src/include/catalog/pg_proc.h | 4 ++
src/include/utils/cash.h | 3 ++
src/test/regress/expected/money.out | 63 +++++++++++++++++++++++++++++++++++
src/test/regress/sql/money.sql | 15 ++++++++
8 files changed, 161 insertions(+), 7 deletions(-)