Rename gp_transactions.source to gp_transactions.sql

Author: baobao0206

…/regress/expected/gp_transactions.source …est/regress/expected/gp_transactions.outsrc/test/regress/expected/gp_transactions.source renamed to src/test/regress/expected/gp_transactions.out src/test/regress/expected/gp_transactions.source renamed to src/test/regress/expected/gp_transactions.out

@@ -1,6 +1,7 @@
 --
 -- Transactions (GPDB-specific tests)
 --
+\getenv abs_builddir PG_ABS_BUILDDIR
 
 CREATE TEMPORARY TABLE temptest (a int);
 INSERT INTO temptest VALUES (generate_series(1, 10));
@@ -10,9 +11,11 @@ CREATE TEMPORARY SEQUENCE tempseq;
 SET SESSION CHARACTERISTICS AS TRANSACTION READ ONLY;
 
 -- Make sure COPY works with temp tables during a READ ONLY transaction.
-COPY temptest TO '@abs_builddir@/results/xacttemp.data';
+\set filename :abs_builddir '/results/xacttemp.data'
+
+COPY temptest TO :'filename';
 DELETE FROM temptest;
-COPY temptest FROM '@abs_builddir@/results/xacttemp.data';
+COPY temptest FROM :'filename';
 SELECT * from temptest;
 
 -- Ensure temporary sequences function correctly as well.