Update to work with new regression tests and directory structure.

src/test/regress/output/copy.source

-QUERY: COPY onek FROM '_CWD_/data/onek.data';
-QUERY: COPY onek TO '_CWD_/results/onek.data';
+QUERY: COPY aggtest FROM '_OBJWD_/data/agg.data';
+QUERY: COPY onek FROM '_OBJWD_/data/onek.data';
+QUERY: COPY onek TO '_OBJWD_/results/onek.data';
 QUERY: DELETE FROM onek;
-QUERY: COPY onek FROM '_CWD_/results/onek.data';
-QUERY: COPY tenk1 FROM '_CWD_/data/tenk.data';
-QUERY: COPY slow_emp4000 FROM '_CWD_/data/rect.data';
-QUERY: COPY person FROM '_CWD_/data/person.data';
-QUERY: COPY emp FROM '_CWD_/data/emp.data';
-QUERY: COPY student FROM '_CWD_/data/student.data';
-QUERY: COPY stud_emp FROM '_CWD_/data/stud_emp.data';
-QUERY: COPY road FROM '_CWD_/data/streets.data';
-QUERY: COPY real_city FROM '_CWD_/data/real_city.data';
-QUERY: COPY hash_i4_heap FROM '_CWD_/data/hash.data';
-QUERY: COPY hash_c16_heap FROM '_CWD_/data/hash.data';
-QUERY: COPY hash_txt_heap FROM '_CWD_/data/hash.data';
-QUERY: COPY hash_f8_heap FROM '_CWD_/data/hash.data';
-QUERY: COPY bt_i4_heap FROM '_CWD_/data/desc.data';
-QUERY: COPY bt_c16_heap FROM '_CWD_/data/hash.data';
-QUERY: COPY bt_txt_heap FROM '_CWD_/data/desc.data';
-QUERY: COPY bt_f8_heap FROM '_CWD_/data/hash.data';
+QUERY: COPY onek FROM '_OBJWD_/results/onek.data';
+QUERY: COPY tenk1 FROM '_OBJWD_/data/tenk.data';
+QUERY: COPY slow_emp4000 FROM '_OBJWD_/data/rect.data';
+QUERY: COPY person FROM '_OBJWD_/data/person.data';
+QUERY: COPY emp FROM '_OBJWD_/data/emp.data';
+QUERY: COPY student FROM '_OBJWD_/data/student.data';
+QUERY: COPY stud_emp FROM '_OBJWD_/data/stud_emp.data';
+QUERY: COPY road FROM '_OBJWD_/data/streets.data';
+QUERY: COPY real_city FROM '_OBJWD_/data/real_city.data';
+QUERY: COPY hash_i4_heap FROM '_OBJWD_/data/hash.data';
+QUERY: COPY hash_c16_heap FROM '_OBJWD_/data/hash.data';
+QUERY: COPY hash_txt_heap FROM '_OBJWD_/data/hash.data';
+QUERY: COPY hash_f8_heap FROM '_OBJWD_/data/hash.data';
+QUERY: COPY bt_i4_heap FROM '_OBJWD_/data/desc.data';
+QUERY: COPY bt_c16_heap FROM '_OBJWD_/data/hash.data';
+QUERY: COPY bt_txt_heap FROM '_OBJWD_/data/desc.data';
+QUERY: COPY bt_f8_heap FROM '_OBJWD_/data/hash.data';

src/test/regress/output/create_function_1.source

 QUERY: CREATE FUNCTION widget_in(opaque)
    RETURNS widget
-   AS '_CWD_/regress_DLSUFFIX_'
+   AS '_OBJWD_/regress_DLSUFFIX_'
    LANGUAGE 'c';
 NOTICE:ProcedureCreate: type 'widget' is not yet defined
 QUERY: CREATE FUNCTION widget_out(opaque)
    RETURNS opaque
-   AS '_CWD_/regress_DLSUFFIX_'
+   AS '_OBJWD_/regress_DLSUFFIX_'
    LANGUAGE 'c';

src/test/regress/output/create_function_2.source

@@ -19,22 +19,22 @@ QUERY: CREATE FUNCTION user_relns()
    LANGUAGE 'sql';
 QUERY: CREATE FUNCTION pt_in_widget(point, widget)
    RETURNS int4
-   AS '_CWD_/regress_DLSUFFIX_'
+   AS '_OBJWD_/regress_DLSUFFIX_'
    LANGUAGE 'c';
 QUERY: CREATE FUNCTION overpaid(emp)
    RETURNS bool
-   AS '_CWD_/regress_DLSUFFIX_'
+   AS '_OBJWD_/regress_DLSUFFIX_'
    LANGUAGE 'c';
 QUERY: CREATE FUNCTION boxarea(box)
    RETURNS int4
-   AS '_CWD_/regress_DLSUFFIX_'
+   AS '_OBJWD_/regress_DLSUFFIX_'
    LANGUAGE 'c';
 QUERY: CREATE FUNCTION interpt_pp(path, path)
    RETURNS point
-   AS '_CWD_/regress_DLSUFFIX_'
+   AS '_OBJWD_/regress_DLSUFFIX_'
    LANGUAGE 'c';
 QUERY: CREATE FUNCTION reverse_c16(char16)
    RETURNS char16
-   AS '_CWD_/regress_DLSUFFIX_'
+   AS '_OBJWD_/regress_DLSUFFIX_'
    LANGUAGE 'c';
-QUERY: LOAD '_CWD_/regress_DLSUFFIX_';
+QUERY: LOAD '_OBJWD_/regress_DLSUFFIX_';