testsuite: add tests for cut and grep;

slight improvements to infrastructure

testsuite/cut.tests

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+# grep tests.
+# Copyright 2007 by Denys Vlasenko <vda.linux@googlemail.com>
+# Licensed under GPL v2, see file LICENSE for details.
+
+. testing.sh
+
+# testing "test name" "options" "expected result" "file input" "stdin"
+#   file input will be file called "input"
+#   test can create a file "actual" instead of writing to stdout
+
+testing "cut '-' (stdin) and multi file handling" \
+	"cut -d' ' -f2 - input" \
+	"over\n""quick\n" \
+	"the quick brown fox\n" \
+	"jumps over the lazy dog\n" \
+
+exit $FAILCOUNT