snapshot - src: FIX: for forum thead

Log Message:
-----------
FIX: for forum thead http://pgfoundry.org/forum/forum.php?thread_id=2280&forum_id=768
Support for unknown DBI datatypes, including user-defined like PostGIS.

Modified Files:
--------------
    src/pl:
        createRemoteSnapshot.pl (r1.8 -> r1.9)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/snapshot/src/pl/createRemoteSnapshot.pl?r1=1.8&r2=1.9)
        getKeyColumns.pl (r1.2 -> r1.3)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/snapshot/src/pl/getKeyColumns.pl?r1=1.2&r2=1.3)
        getSthColumnTypes.pl (r1.2 -> r1.3)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/snapshot/src/pl/getSthColumnTypes.pl?r1=1.2&r2=1.3)
        getUnifiedSqlType.pl (r1.4 -> r1.5)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/snapshot/src/pl/getUnifiedSqlType.pl?r1=1.4&r2=1.5)
        map2PgType.pl (r1.5 -> r1.6)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/snapshot/src/pl/map2PgType.pl?r1=1.5&r2=1.6)
        retrieveMasterForSnapshot.pl (r1.2 -> r1.3)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/snapshot/src/pl/retrieveMasterForSnapshot.pl?r1=1.2&r2=1.3)
        validateModifyPrebuiltTable.pl (r1.3 -> r1.4)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/snapshot/src/pl/validateModifyPrebuiltTable.pl?r1=1.3&r2=1.4)