pgbulkload - pgbulkload: Add TupleFormerValue() to share common codes.

Log Message:
-----------
Add TupleFormerValue() to share common codes.

Modified Files:
--------------
    pgbulkload/bin/pgut:
        pgut.c (r1.8 -> r1.9)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbulkload/pgbulkload/bin/pgut/pgut.c?r1=1.8&r2=1.9)
        pgut.h (r1.9 -> r1.10)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbulkload/pgbulkload/bin/pgut/pgut.h?r1=1.9&r2=1.10)
    pgbulkload/include:
        reader.h (r1.6 -> r1.7)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbulkload/pgbulkload/include/reader.h?r1=1.6&r2=1.7)
    pgbulkload/lib:
        parser_binary.c (r1.3 -> r1.4)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbulkload/pgbulkload/lib/parser_binary.c?r1=1.3&r2=1.4)
        parser_csv.c (r1.4 -> r1.5)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbulkload/pgbulkload/lib/parser_csv.c?r1=1.4&r2=1.5)
        reader.c (r1.7 -> r1.8)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbulkload/pgbulkload/lib/reader.c?r1=1.7&r2=1.8)
        source.c (r1.3 -> r1.4)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbulkload/pgbulkload/lib/source.c?r1=1.3&r2=1.4)
    pgbulkload/lib/pgut:
        pgut-be.c (r1.1 -> r1.2)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbulkload/pgbulkload/lib/pgut/pgut-be.c?r1=1.1&r2=1.2)
        pgut-be.h (r1.2 -> r1.3)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbulkload/pgbulkload/lib/pgut/pgut-be.h?r1=1.2&r2=1.3)