Some minor fixes.

mysql-test/mysql-test-run.sh:
  Less restricted permissions.
mysql-test/r/rpl_rotate_logs.result:
  If the path where mysql-test-run was run was symlinked, this test could
  fail. This is a fix.
mysql-test/t/rpl_rotate_logs.test:
  If the path where mysql-test-run was run was symlinked, this test could
  fail. This is a fix.

mysql-test/mysql-test-run.sh

@@ -198,6 +198,13 @@ LD_LIBRARY_PATH="$BASEDIR/lib:$BASEDIR/libmysql/.libs:$LD_LIBRARY_PATH"
 DYLD_LIBRARY_PATH="$BASEDIR/lib:$BASEDIR/libmysql/.libs:$DYLD_LIBRARY_PATH"
 export LD_LIBRARY_PATH DYLD_LIBRARY_PATH
 
+#
+# Allow anyone in the group to see the generated database files
+#
+UMASK=0660
+UMASK_DIR=0770
+export UMASK UMASK_DIR
+
 MASTER_RUNNING=0
 MASTER1_RUNNING=0
 MASTER_MYPORT=9306

mysql-test/r/rpl_rotate_logs.result

 drop table if exists t1, t2, t3, t4;
 drop table if exists t1, t2, t3, t4;
 start slave;
-ERROR HY000: File 'TESTDIR/var/slave-data/master.info' not found (Errcode: 13)
+Got one of the listed errors
 start slave;
 ERROR HY000: Could not initialize master info structure; more error messages can be found in the MySQL error log
 change master to master_host='127.0.0.1',master_port=MASTER_PORT, master_user='root';

mysql-test/t/rpl_rotate_logs.test

@@ -24,7 +24,7 @@ drop table if exists t1, t2, t3, t4;
 # START SLAVE will fail because it can't read the file (mode 000)
 # (system error 13)
 --replace_result $MYSQL_TEST_DIR TESTDIR
---error 1105
+--error 1105,1105
 start slave;
 system chmod 600 var/slave-data/master.info;
 # It will fail again because the file is empty so the slave cannot get valuable