pgsql: DDL support for collations

DDL support for collations

- collowner field
- CREATE COLLATION
- ALTER COLLATION
- DROP COLLATION
- COMMENT ON COLLATION
- integration with extensions
- pg_dump support for the above
- dependency management
- psql tab completion
- psql \dO command

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/b313bca0afce3ab9dab0a77c64c0982835854b9a

Modified Files
--------------
doc/src/sgml/catalogs.sgml                       |   21 +-
doc/src/sgml/charset.sgml                        |   11 +-
doc/src/sgml/ref/allfiles.sgml                   |    3 +
doc/src/sgml/ref/alter_collation.sgml            |  128 +++++++
doc/src/sgml/ref/alter_extension.sgml            |    1 +
doc/src/sgml/ref/comment.sgml                    |    2 +
doc/src/sgml/ref/create_collation.sgml           |  175 ++++++++++
doc/src/sgml/ref/drop_collation.sgml             |  110 ++++++
doc/src/sgml/ref/psql-ref.sgml                   |   19 +
doc/src/sgml/reference.sgml                      |    3 +
src/backend/catalog/Makefile                     |    2 +-
src/backend/catalog/aclchk.c                     |   31 ++
src/backend/catalog/dependency.c                 |   46 +++
src/backend/catalog/heap.c                       |    9 +
src/backend/catalog/index.c                      |   14 +
src/backend/catalog/objectaddress.c              |    9 +
src/backend/catalog/pg_collation.c               |  163 +++++++++
src/backend/catalog/pg_shdepend.c                |    6 +
src/backend/catalog/pg_type.c                    |   13 +
src/backend/commands/Makefile                    |    2 +-
src/backend/commands/alter.c                     |   17 +
src/backend/commands/collationcmds.c             |  401 ++++++++++++++++++++++
src/backend/commands/comment.c                   |    5 +
src/backend/commands/dbcommands.c                |  116 ++++---
src/backend/commands/tablecmds.c                 |   26 +-
src/backend/commands/typecmds.c                  |    1 +
src/backend/parser/gram.y                        |   57 +++-
src/backend/tcop/utility.c                       |   18 +
src/bin/initdb/initdb.c                          |    3 +-
src/bin/pg_dump/common.c                         |    6 +
src/bin/pg_dump/pg_backup_archiver.c             |    4 +-
src/bin/pg_dump/pg_dump.c                        |  187 ++++++++++
src/bin/pg_dump/pg_dump.h                        |   10 +-
src/bin/pg_dump/pg_dump_sort.c                   |   17 +-
src/bin/psql/command.c                           |    3 +
src/bin/psql/describe.c                          |   62 ++++-
src/bin/psql/describe.h                          |    3 +
src/bin/psql/help.c                              |    1 +
src/bin/psql/tab-complete.c                      |   18 +-
src/include/catalog/catversion.h                 |    2 +-
src/include/catalog/dependency.h                 |    1 +
src/include/catalog/pg_collation.h               |   12 +-
src/include/catalog/pg_collation_fn.h            |   23 ++
src/include/catalog/pg_type_fn.h                 |    1 +
src/include/commands/collationcmds.h             |   28 ++
src/include/commands/dbcommands.h                |    2 +
src/include/nodes/parsenodes.h                   |    1 +
src/include/parser/kwlist.h                      |    1 +
src/include/utils/acl.h                          |    2 +
src/test/regress/expected/collate.linux.utf8.out |   93 +++++
src/test/regress/sql/collate.linux.utf8.sql      |   62 ++++
51 files changed, 1860 insertions(+), 91 deletions(-)