orafce - orafce: [dbms_output] - Fix enable(NULL) to enable the module

Log Message:
-----------

[dbms_output]
- Fix enable(NULL) to enable the module with 1MB buffer.
- Fix put_line() to be restricted by only buffer size, not 2kB.
- Fix get_line() to return 0 as status when succeeded.
- Add a regression test for dbms_output.

[utl_file]
- Fix fclose() and fclose_all() to invalidate file descriptors.
- Fix get_line() to return readable buffers instead of error
  when buffer is not enough.
- Add a variation of get_line() with length.
- Add multi-byte verification for input file.
- Supports 50 files (compatible with Oracle10g)

[date functions]
- Fix add_months() for ends of months
- Fix months_between() for ends of months
- Fix next_day(date, text) for short day of the week (like 'sun').
- Add next_day(date, integer), that is undocumented in oracle.
- Add ENABLE_INTERNATIONALIZED_WEEKDAY option to next_day().
  Supports weekday-names in English and in Japanese for now.

[others functions]
- Fix concat() for non-text arguments.
- Fix instr() for minus offset.
- Fix nvl2(). It is not an alias of coalesce().
- Add decode() functions.

[infrastructure improvements]
- Add an uninstaller script
- Add some PGDLLIMPORT for Windows build.
- Add some macros and functions for version compatibility.
  Now it can be built on 8.2, 8.3 and 8.4dev(2008-09-24).
- Replace \' to '' to avoid warnings of insecure strings.
- Use GET_ARG_TEXT_PP() to avoid unpacking of short text in 8.3.

Modified Files:
--------------
    orafce:
        Makefile (r1.26 -> r1.27)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/Makefile.diff?r1=1.26&r2=1.27)
        README.orafunc (r1.26 -> r1.27)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/README.orafunc.diff?r1=1.26&r2=1.27)
        alert.c (r1.13 -> r1.14)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/alert.c.diff?r1=1.13&r2=1.14)
        assert.c (r1.2 -> r1.3)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/assert.c.diff?r1=1.2&r2=1.3)
        convert.c (r1.2 -> r1.3)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/convert.c.diff?r1=1.2&r2=1.3)
        datefce.c (r1.12 -> r1.13)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/datefce.c.diff?r1=1.12&r2=1.13)
        file.c (r1.8 -> r1.9)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/file.c.diff?r1=1.8&r2=1.9)
        orafunc.h (r1.11 -> r1.12)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/orafunc.h.diff?r1=1.11&r2=1.12)
        orafunc.sql.in (r1.42 -> r1.43)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/orafunc.sql.in.diff?r1=1.42&r2=1.43)
        others.c (r1.10 -> r1.11)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/others.c.diff?r1=1.10&r2=1.11)
        pipe.c (r1.17 -> r1.18)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/pipe.c.diff?r1=1.17&r2=1.18)
        plunit.c (r1.5 -> r1.6)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/plunit.c.diff?r1=1.5&r2=1.6)
        plvdate.c (r1.9 -> r1.10)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/plvdate.c.diff?r1=1.9&r2=1.10)
        plvstr.c (r1.12 -> r1.13)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/plvstr.c.diff?r1=1.12&r2=1.13)
        plvsubst.c (r1.5 -> r1.6)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/plvsubst.c.diff?r1=1.5&r2=1.6)
        putline.c (r1.10 -> r1.11)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/putline.c.diff?r1=1.10&r2=1.11)
        shmmc.c (r1.8 -> r1.9)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/shmmc.c.diff?r1=1.8&r2=1.9)
    orafce/expected:
        files.out (r1.2 -> r1.3)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/expected/files.out.diff?r1=1.2&r2=1.3)
        orafunc.out (r1.10 -> r1.11)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/expected/orafunc.out.diff?r1=1.10&r2=1.11)
    orafce/sql:
        files.sql (r1.2 -> r1.3)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/sql/files.sql.diff?r1=1.2&r2=1.3)
        orafunc.sql (r1.10 -> r1.11)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/sql/orafunc.sql.diff?r1=1.10&r2=1.11)