pgsql: Add inheritable ACE when creating a restricted token for

Log Message:
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Add inheritable ACE when creating a restricted token for execution on
Win32.

Also refactor the code around it to be more clear.

Jesse Morris

Tags:
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REL8_3_STABLE

Modified Files:
--------------
    pgsql/src/bin/initdb:
        initdb.c (r1.152.2.5 -> r1.152.2.6)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/initdb/initdb.c?r1=1.152.2.5&r2=1.152.2.6)
    pgsql/src/bin/pg_ctl:
        pg_ctl.c (r1.92.2.7 -> r1.92.2.8)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_ctl/pg_ctl.c?r1=1.92.2.7&r2=1.92.2.8)
    pgsql/src/include:
        port.h (r1.116.2.5 -> r1.116.2.6)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/include/port.h?r1=1.116.2.5&r2=1.116.2.6)
    pgsql/src/port:
        exec.c (r1.57.2.2 -> r1.57.2.3)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/port/exec.c?r1=1.57.2.2&r2=1.57.2.3)
    pgsql/src/test/regress:
        pg_regress.c (r1.41.2.3 -> r1.41.2.4)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/pg_regress.c?r1=1.41.2.3&r2=1.41.2.4)