pgsql: Rename "pg_clog" directory to "pg_xact".

Rename "pg_clog" directory to "pg_xact".

Names containing the letters "log" sometimes confuse users into
believing that only non-critical data is present. It is hoped
this renaming will discourage ill-considered removals of transaction
status data.

Michael Paquier

Discussion: http://postgr.es/m/CA+Tgmoa9xFQyjRZupbdEFuwUerFTvC6HjZq1ud6GYragGDFFgA@mail.gmail.com

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/88e66d193fbaf756b3cc9bf94cad116aacbb355b

Modified Files
--------------
doc/src/sgml/backup.sgml | 4 ++--
doc/src/sgml/catalogs.sgml | 4 ++--
doc/src/sgml/config.sgml | 2 +-
doc/src/sgml/func.sgml | 2 +-
doc/src/sgml/maintenance.sgml | 8 ++++----
doc/src/sgml/ref/pg_resetwal.sgml | 4 ++--
doc/src/sgml/ref/pg_rewind.sgml | 2 +-
doc/src/sgml/storage.sgml | 10 +++++-----
doc/src/sgml/wal.sgml | 2 +-
src/backend/access/heap/heapam.c | 4 ++--
src/backend/access/transam/README | 10 +++++-----
src/backend/access/transam/clog.c | 2 +-
src/backend/access/transam/commit_ts.c | 2 +-
src/backend/access/transam/multixact.c | 2 +-
src/backend/access/transam/subtrans.c | 5 ++---
src/backend/access/transam/transam.c | 2 +-
src/backend/access/transam/twophase.c | 4 ++--
src/backend/access/transam/xact.c | 18 +++++++++---------
src/backend/access/transam/xlog.c | 2 +-
src/backend/commands/vacuum.c | 10 +++++-----
src/backend/postmaster/autovacuum.c | 2 +-
src/backend/storage/buffer/README | 2 +-
src/backend/storage/ipc/procarray.c | 4 ++--
src/backend/utils/time/tqual.c | 6 +++---
src/bin/initdb/initdb.c | 2 +-
src/bin/pg_upgrade/exec.c | 8 +++++++-
src/bin/pg_upgrade/pg_upgrade.c | 30 ++++++++++++++++++------------
src/include/access/slru.h | 4 ++--
28 files changed, 84 insertions(+), 73 deletions(-)