pgsql: Add mention of using tools/fsync to test fsync methods. Restruct - Mailing list pgsql-committers

Add mention of using tools/fsync to test fsync methods. Restructure
recent wal_sync_method doc paragraph to be clearer.

Branch
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REL8_4_STABLE

Details
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http://git.postgresql.org/gitweb?p=postgresql.git;a=commitdiff;h=d94d0a8c83715cb403267f0c89068781b706ddff

Modified Files
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doc/src/sgml/config.sgml |   14 ++++++++------
doc/src/sgml/wal.sgml    |   12 +++++++-----
2 files changed, 15 insertions(+), 11 deletions(-)