pgsql: Force certain "pljava" custom GUCs to be PGC_SUSET.

Force certain "pljava" custom GUCs to be PGC_SUSET.

Future PL/Java versions will close CVE-2016-0766 by making these GUCs
PGC_SUSET.  This PostgreSQL change independently mitigates that PL/Java
vulnerability, helping sites that update PostgreSQL more frequently than
PL/Java.  Back-patch to 9.1 (all supported versions).

Branch
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REL9_3_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/34e91736bba04b02a937b4213a66630b248bdadd

Modified Files
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src/backend/utils/misc/guc.c | 11 +++++++++++
1 file changed, 11 insertions(+)