pgsql: Sync pg_dump and pg_dumpall output

Sync pg_dump and pg_dumpall output

Before exiting any files are fsync'ed. A --no-sync option is also
provided for a faster exit if desired.

Michael Paquier.

Reviewed by Albe Laurenz

Discussion: https://postgr.es/m/CAB7nPqS1uZ=Ov+UruW6jr3vB-S_DLVMPc0dQpV-fTDjmm0ZQMg@mail.gmail.com

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/96a7128b7b4c9ce4fb51df8c8b216dfab6340766

Modified Files
--------------
doc/src/sgml/ref/pg_dump.sgml | 14 ++++++++++++++
doc/src/sgml/ref/pg_dumpall.sgml | 14 ++++++++++++++
src/bin/pg_dump/pg_backup.h | 2 +-
src/bin/pg_dump/pg_backup_archiver.c | 15 ++++++++++-----
src/bin/pg_dump/pg_backup_archiver.h | 1 +
src/bin/pg_dump/pg_backup_custom.c | 5 +++++
src/bin/pg_dump/pg_backup_directory.c | 8 ++++++++
src/bin/pg_dump/pg_backup_tar.c | 5 +++++
src/bin/pg_dump/pg_dump.c | 12 ++++++++++--
src/bin/pg_dump/pg_dumpall.c | 15 +++++++++++++++
src/common/file_utils.c | 19 +++++++++++++++++++
src/include/common/file_utils.h | 1 +
12 files changed, 103 insertions(+), 8 deletions(-)