pgsql: Fix some problems with patch to fsync the data directory.

Fix some problems with patch to fsync the data directory.

pg_win32_is_junction() was a typo for pgwin32_is_junction().  open()
was used not only in a two-argument form, which breaks on Windows,
but also where BasicOpenFile() should have been used.

Per reports from Andrew Dunstan and David Rowley.

Branch
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REL9_1_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/6ee1a7738ad04a1e6e481c81149770b2e565c0c1

Modified Files
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src/backend/storage/file/fd.c |    4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)