orafce - orafce: new regress tests some corrections related new tests

Log Message:
-----------
new regress tests
some corrections related new tests (full oracle compatibility)

Modified Files:
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orafce:
datefce.c (r1.7 -> r1.8)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/datefce.c.diff?r1=1.7&r2=1.8)
orafunc.sql.in (r1.23 -> r1.24)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/orafunc.sql.in.diff?r1=1.23&r2=1.24)
plvstr.c (r1.6 -> r1.7)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/plvstr.c.diff?r1=1.6&r2=1.7)
orafce/expected:
orafunc.out (r1.3 -> r1.4)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/expected/orafunc.out.diff?r1=1.3&r2=1.4)
orafce/sql:
orafunc.sql (r1.4 -> r1.5)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/sql/orafunc.sql.diff?r1=1.4&r2=1.5)