Log Message:-----------Enable IPV6 when building with MSVC.
Modified Files:-------------- pgsql/src/tools/msvc: Mkvcbuild.pm (r1.7 -> r1.8) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/tools/msvc/Mkvcbuild.pm.diff?r1=1.7&r2=1.8) Solution.pm (r1.20 -> r1.21) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/tools/msvc/Solution.pm.diff?r1=1.20&r2=1.21)