pgsnmpd - pgsnmpd: Add MIB stuff for pg_aggregate, move pg_class and

Log Message:
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Add MIB stuff for pg_aggregate, move pg_class and pg_aggregate files into a new directory

Added Files:
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    pgsnmpd/pgsql_mib_pieces:
        pg_aggregate.mib (r1.1)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgsnmpd/pgsnmpd/pgsql_mib_pieces/pg_aggregate.mib?rev=1.1&content-type=text/x-cvsweb-markup)
        pg_aggregate.tbldef (r1.1)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgsnmpd/pgsnmpd/pgsql_mib_pieces/pg_aggregate.tbldef?rev=1.1&content-type=text/x-cvsweb-markup)
        pg_class.mib (r1.1)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgsnmpd/pgsnmpd/pgsql_mib_pieces/pg_class.mib?rev=1.1&content-type=text/x-cvsweb-markup)
        pg_class.tbldef (r1.1)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgsnmpd/pgsnmpd/pgsql_mib_pieces/pg_class.tbldef?rev=1.1&content-type=text/x-cvsweb-markup)

Removed Files:
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    pgsnmpd:
        pg_class.mib
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgsnmpd/pgsnmpd/pg_class.mib)
        pg_class.tbldef
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgsnmpd/pgsnmpd/pg_class.tbldef)