pgsql: Kerberos fixes from Magnus Hagander --- in theory Kerberos 5 auth

Log Message:
-----------
Kerberos fixes from Magnus Hagander --- in theory Kerberos 5 auth
should work on Windows now. Also, rename set_noblock to pg_set_noblock;
since it is included in libpq, the former name polluted application
namespace.

Modified Files:
--------------
pgsql:
configure (r1.433 -> r1.434)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/configure.diff?r1=1.433&r2=1.434)
configure.in (r1.406 -> r1.407)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/configure.in.diff?r1=1.406&r2=1.407)
pgsql/src/backend/postmaster:
pgstat.c (r1.87 -> r1.88)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/postmaster/pgstat.c.diff?r1=1.87&r2=1.88)
postmaster.c (r1.449 -> r1.450)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/postmaster/postmaster.c.diff?r1=1.449&r2=1.450)
pgsql/src/include:
port.h (r1.73 -> r1.74)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/port.h.diff?r1=1.73&r2=1.74)
pgsql/src/interfaces/libpq:
Makefile (r1.130 -> r1.131)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/Makefile.diff?r1=1.130&r2=1.131)
fe-auth.c (r1.99 -> r1.100)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/fe-auth.c.diff?r1=1.99&r2=1.100)
fe-connect.c (r1.303 -> r1.304)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/fe-connect.c.diff?r1=1.303&r2=1.304)
pgsql/src/port:
noblock.c (r1.5 -> r1.6)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/port/noblock.c.diff?r1=1.5&r2=1.6)