pgsql: Correctly name the Windows operating systems

Log Message:
-----------
Correctly name the Windows operating systems

Modified Files:
--------------
    pgsql/doc/src/sgml:
        libpq.sgml (r1.168 -> r1.169)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/libpq.sgml.diff?r1=1.168&r2=1.169)
        release.sgml (r1.313 -> r1.314)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/release.sgml.diff?r1=1.313&r2=1.314)
        runtime.sgml (r1.293 -> r1.294)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/runtime.sgml.diff?r1=1.293&r2=1.294)
    pgsql/doc/src/sgml/ref:
        copy.sgml (r1.59 -> r1.60)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/copy.sgml.diff?r1=1.59&r2=1.60)
        pg_ctl-ref.sgml (r1.28 -> r1.29)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/pg_ctl-ref.sgml.diff?r1=1.28&r2=1.29)