aupg - aupg_src: Added a bunch of tests.

Log Message:
-----------
Added a bunch of tests.  Also created the timetravel function for an audited table
and added tests for that.  Nearing usability for EARLY work (still in dangerous
flux; do not use in production).

Modified Files:
--------------
    aupg_src/sql:
        _test_takedown.sql (r1.2 -> r1.3)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/aupg/aupg_src/sql/_test_takedown.sql.diff?r1=1.2&r2=1.3)
        audit_infrastructure.sql (r1.6 -> r1.7)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/aupg/aupg_src/sql/audit_infrastructure.sql.diff?r1=1.6&r2=1.7)
        audit_test_cds.sql (r1.3 -> r1.4)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/aupg/aupg_src/sql/audit_test_cds.sql.diff?r1=1.3&r2=1.4)

Added Files:
-----------
    aupg_src/sql:
        maketests.pl (r1.1)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/aupg/aupg_src/sql/maketests.pl?rev=1.1&content-type=text/x-cvsweb-markup)