Обсуждение: pgsql: Switch various builtin functions to use pg_lsn instead of text.

Switch various builtin functions to use pg_lsn instead of text.

The functions in slotfuncs.c don't exist in any released version,
but the changes to xlogfuncs.c represent backward-incompatibilities.
Per discussion, we're hoping that the queries using these functions
are few enough and simple enough that this won't cause too much
breakage for users.

Michael Paquier, reviewed by Andres Freund and further modified
by me.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/6f289c2b7d00f07f13f679092f7c71f78950e9da

Modified Files
--------------
doc/src/sgml/catalogs.sgml             |    2 +-
doc/src/sgml/func.sgml                 |   24 ++---
src/backend/access/transam/xlogfuncs.c |  153 ++++----------------------------
src/backend/catalog/system_views.sql   |    2 +-
src/backend/replication/slotfuncs.c    |    8 +-
src/include/catalog/catversion.h       |    2 +-
src/include/catalog/pg_proc.h          |   26 +++---
7 files changed, 45 insertions(+), 172 deletions(-)