pgsnmpd - pgsnmpd: Allow user to set search_path on the command line

Log Message:
-----------
Allow user to set search_path on the command line
Modify rdbmsDbTable and (though this has strange problems yet) rdbmsDbInfoTable to make use of pgsnmpd_rdbmsDbTable
valuesfrom the database 
Add last_backup date to pgsnmpd_rdbmsDbTable definition
Update TODO

Modified Files:
--------------
    pgsnmpd:
        TODO.txt (r1.3 -> r1.4)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgsnmpd/pgsnmpd/TODO.txt.diff?r1=1.3&r2=1.4)
        pgsnmpd.c (r1.12 -> r1.13)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgsnmpd/pgsnmpd/pgsnmpd.c.diff?r1=1.12&r2=1.13)
        pgsnmpd.sql (r1.1 -> r1.2)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgsnmpd/pgsnmpd/pgsnmpd.sql.diff?r1=1.1&r2=1.2)
    pgsnmpd/RDBMS-MIB_src/rdbmsDbInfoTable:
        rdbmsDbInfoTable_data_access.c (r1.1 -> r1.2)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgsnmpd/pgsnmpd/RDBMS-MIB_src/rdbmsDbInfoTable/rdbmsDbInfoTable_data_access.c.diff?r1=1.1&r2=1.2)
    pgsnmpd/RDBMS-MIB_src/rdbmsDbTable:
        rdbmsDbTable_data_access.c (r1.1 -> r1.2)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgsnmpd/pgsnmpd/RDBMS-MIB_src/rdbmsDbTable/rdbmsDbTable_data_access.c.diff?r1=1.1&r2=1.2)