Add test-grep.out file for now.

tests/test-grep.out

@@ -0,0 +1,10 b''
+port:4:export
+port:4:vaportight
+port:4:import/export
+FIXME: history is wrong here
+port:1:1:-:eggs:import
+port:1:2:+:eggs:vaportight
+port:1:3:+:eggs:import/export
+port:0:2:+:spam:export
+port:0:1:+:spam:import
+port:4:import/export