postgresql: add fix for CVE-2014-0062 Security Advisory

Race condition in the (1) CREATE INDEX and (2) unspecified ALTER TABLE
commands in PostgreSQL before 8.4.20, 9.0.x before 9.0.16, 9.1.x before
9.1.12, 9.2.x before 9.2.7, and 9.3.x before 9.3.3 allows remote
authenticated users to create an unauthorized index or read portions of
unauthorized tables by creating or deleting a table with the same name
during the timing window.

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-0062



Signed-off-by: Yue Tao <Yue.Tao@windriver.com>
Signed-off-by: Kai Kang <kai.kang@windriver.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>