pgsql: Back-patch addition of ssl_renegotiation_limit into 7.4 through

Log Message:
-----------
Back-patch addition of ssl_renegotiation_limit into 7.4 through 8.1.

Tags:
----
REL8_0_STABLE

Modified Files:
--------------
    pgsql/doc/src/sgml:
        runtime.sgml (r1.301.4.9 -> r1.301.4.10)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/runtime.sgml?r1=1.301.4.9&r2=1.301.4.10)
    pgsql/src/backend/libpq:
        be-secure.c (r1.56.4.5 -> r1.56.4.6)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/libpq/be-secure.c?r1=1.56.4.5&r2=1.56.4.6)
    pgsql/src/backend/utils/misc:
        guc.c (r1.252.4.8 -> r1.252.4.9)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/misc/guc.c?r1=1.252.4.8&r2=1.252.4.9)
        postgresql.conf.sample (r1.134.4.3 -> r1.134.4.4)

(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/misc/postgresql.conf.sample?r1=1.134.4.3&r2=1.134.4.4)