pgsql: Refactor ALTER some-obj RENAME implementation

Refactor ALTER some-obj RENAME implementation

Remove duplicate implementations of catalog munging and miscellaneous
privilege checks. Instead rely on already existing data in
objectaddress.c to do the work.

Author: KaiGai Kohei, changes by me
Reviewed by: Robert Haas, Álvaro Herrera, Dimitri Fontaine

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/765cbfdc9263bf7c90b9d1f1044c6950b8b7088c

Modified Files
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src/backend/catalog/objectaddress.c | 4 +-
src/backend/commands/aggregatecmds.c | 63 -----
src/backend/commands/alter.c | 374 ++++++++++++++++++++-------
src/backend/commands/collationcmds.c | 48 ----
src/backend/commands/conversioncmds.c | 53 ----
src/backend/commands/event_trigger.c | 46 ----
src/backend/commands/foreigncmds.c | 87 ------
src/backend/commands/functioncmds.c | 61 +-----
src/backend/commands/opclasscmds.c | 171 +++----------
src/backend/commands/proclang.c | 42 ---
src/backend/commands/tsearchcmds.c | 196 --------------
src/backend/parser/gram.y | 12 +-
src/include/commands/collationcmds.h | 3 +-
src/include/commands/conversioncmds.h | 1 -
src/include/commands/defrem.h | 14 +-
src/include/commands/event_trigger.h | 1 -
src/include/commands/proclang.h | 1 -
src/test/regress/expected/alter_generic.out | 16 +-
src/test/regress/sql/alter_generic.sql | 6 +-
19 files changed, 348 insertions(+), 851 deletions(-)