Use absolute path to allow tets to be run also when datadir differs

mysql-test/extra/rpl_tests/rpl_row_001.test

+let $LOAD_FILE= $MYSQLTEST_VARDIR/std_data/words.dat;
 CREATE TABLE t1 (word CHAR(20) NOT NULL);
-LOAD DATA INFILE '../../std_data/words.dat' INTO TABLE t1;
---replace_result $MYSQL_TEST_DIR MYSQL_TEST_DIR
-eval LOAD DATA LOCAL INFILE '$MYSQL_TEST_DIR/std_data/words.dat' INTO TABLE t1;
+--replace_result $LOAD_FILE LOAD_FILE
+eval LOAD DATA INFILE '$LOAD_FILE' INTO TABLE t1;
+--replace_result $LOAD_FILE LOAD_FILE
+eval LOAD DATA INFILE '$LOAD_FILE' INTO TABLE t1;
 SELECT * FROM t1  ORDER BY word LIMIT 10;
 
 #

mysql-test/suite/rpl/r/rpl_row_001.result

@@ -5,8 +5,8 @@ reset slave;
 drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
 start slave;
 CREATE TABLE t1 (word CHAR(20) NOT NULL);
-LOAD DATA INFILE '../../std_data/words.dat' INTO TABLE t1;
-LOAD DATA LOCAL INFILE 'MYSQL_TEST_DIR/std_data/words.dat' INTO TABLE t1;
+LOAD DATA INFILE 'LOAD_FILE' INTO TABLE t1;
+LOAD DATA INFILE 'LOAD_FILE' INTO TABLE t1;
 SELECT * FROM t1  ORDER BY word LIMIT 10;
 word
 Aarhus

mysql-test/suite/rpl_ndb/r/rpl_ndb_row_001.result

@@ -5,8 +5,8 @@ reset slave;
 drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
 start slave;
 CREATE TABLE t1 (word CHAR(20) NOT NULL);
-LOAD DATA INFILE '../../../std_data/words.dat' INTO TABLE t1;
-LOAD DATA LOCAL INFILE 'MYSQL_TEST_DIR/std_data/words.dat' INTO TABLE t1;
+LOAD DATA INFILE 'LOAD_FILE' INTO TABLE t1;
+LOAD DATA INFILE 'LOAD_FILE' INTO TABLE t1;
 SELECT * FROM t1  ORDER BY word LIMIT 10;
 word
 Aarhus