psqlodbc - psqlodbc: Improve the handling of error messages at

Log Message:
-----------
Improve the handling of error messages at connection time.

Modified Files:
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    psqlodbc:
        connection.c (r1.179 -> r1.180)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/psqlodbc/psqlodbc/connection.c.diff?r1=1.179&r2=1.180)
        drvconn.c (r1.60 -> r1.61)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/psqlodbc/psqlodbc/drvconn.c.diff?r1=1.60&r2=1.61)
        psqlodbc.h (r1.127 -> r1.128)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/psqlodbc/psqlodbc/psqlodbc.h.diff?r1=1.127&r2=1.128)
        setup.c (r1.46 -> r1.47)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/psqlodbc/psqlodbc/setup.c.diff?r1=1.46&r2=1.47)
        version.h (r1.137 -> r1.138)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/psqlodbc/psqlodbc/version.h.diff?r1=1.137&r2=1.138)
        win_unicode.c (r1.23 -> r1.24)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/psqlodbc/psqlodbc/win_unicode.c.diff?r1=1.23&r2=1.24)