pgsql: Remove QNX port.

Log Message:
-----------
Remove QNX port.

Modified Files:
--------------
    pgsql:
        configure (r1.469 -> r1.470)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/configure.diff?r1=1.469&r2=1.470)
        configure.in (r1.439 -> r1.440)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/configure.in.diff?r1=1.439&r2=1.440)
    pgsql/doc/src/sgml:
        installation.sgml (r1.250 -> r1.251)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/installation.sgml.diff?r1=1.250&r2=1.251)
        runtime.sgml (r1.359 -> r1.360)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/runtime.sgml.diff?r1=1.359&r2=1.360)
    pgsql/src/backend:
        Makefile (r1.113 -> r1.114)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/Makefile.diff?r1=1.113&r2=1.114)
    pgsql/src/backend/bootstrap:
        Makefile (r1.32 -> r1.33)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/bootstrap/Makefile.diff?r1=1.32&r2=1.33)
    pgsql/src/backend/port:
        Makefile (r1.20 -> r1.21)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/Makefile.diff?r1=1.20&r2=1.21)
    pgsql/src/backend/utils/misc:
        ps_status.c (r1.27 -> r1.28)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/misc/ps_status.c.diff?r1=1.27&r2=1.28)
    pgsql/src/backend/utils/sort:
        tuplesort.c (r1.56 -> r1.57)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/sort/tuplesort.c.diff?r1=1.56&r2=1.57)
    pgsql/src/bin/ipcclean:
        ipcclean.sh (r1.15 -> r1.16)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/ipcclean/ipcclean.sh.diff?r1=1.15&r2=1.16)
    pgsql/src/include:
        pg_config_manual.h (r1.18 -> r1.19)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/pg_config_manual.h.diff?r1=1.18&r2=1.19)
    pgsql/src/include/storage:
        s_lock.h (r1.146 -> r1.147)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/storage/s_lock.h.diff?r1=1.146&r2=1.147)
    pgsql/src/pl/plpgsql/src:
        Makefile (r1.27 -> r1.28)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/pl/plpgsql/src/Makefile.diff?r1=1.27&r2=1.28)
    pgsql/src/port:
        isinf.c (r1.7 -> r1.8)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/port/isinf.c.diff?r1=1.7&r2=1.8)
    pgsql/src/test/regress:
        pg_regress.sh (r1.62 -> r1.63)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/pg_regress.sh.diff?r1=1.62&r2=1.63)
        resultmap (r1.79 -> r1.80)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/resultmap.diff?r1=1.79&r2=1.80)

Removed Files:
-------------
    pgsql/doc:
        FAQ_QNX4
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/FAQ_QNX4)
    pgsql/src/backend/port/dynloader:
        qnx4.c
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/dynloader/qnx4.c)
        qnx4.h
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/dynloader/qnx4.h)
    pgsql/src/backend/port/qnx4:
        Makefile
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/qnx4/Makefile)
        ipc.h
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/qnx4/ipc.h)
        isnan.c
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/qnx4/isnan.c)
        sem.c
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/qnx4/sem.c)
        sem.h
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/qnx4/sem.h)
        shm.c
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/qnx4/shm.c)
        shm.h
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/qnx4/shm.h)
        tstsem.c
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/qnx4/tstsem.c)
        tstshm.c
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/qnx4/tstshm.c)
    pgsql/src/makefiles:
        Makefile.qnx4
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/makefiles/Makefile.qnx4)
    pgsql/src/template:
        qnx4
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/template/qnx4)
    pgsql/src/test/regress/expected:
        float8-exp-three-digits.out
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/float8-exp-three-digits.out)