pgsql: Fix freenig of names in Kerberos when using MIT - need to use the

Log Message:
-----------
Fix freenig of names in Kerberos when using MIT - need to use the
free function provided in the Kerberos library.
This fixes a very hard to track down heap corruption on windows
when using debug runtimes.

Modified Files:
--------------
pgsql:
configure (r1.551 -> r1.552)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/configure.diff?r1=1.551&r2=1.552)
configure.in (r1.518 -> r1.519)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/configure.in.diff?r1=1.518&r2=1.519)
pgsql/src/include:
pg_config.h.in (r1.119 -> r1.120)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/pg_config.h.in.diff?r1=1.119&r2=1.120)
pgsql/src/interfaces/libpq:
fe-auth.c (r1.124 -> r1.125)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/fe-auth.c.diff?r1=1.124&r2=1.125)
pgsql/src/tools/msvc:
Solution.pm (r1.27 -> r1.28)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/tools/msvc/Solution.pm.diff?r1=1.27&r2=1.28)