- introduce variable _BB_CONFIG_DEP to the new test harness.
  This is used to see if given tests should be run (are available) or not.
  Print "UNTESTED: descr" if the applet or feature is not available.
- add _BB_CONFIG_DEP to existing new.tests
- move old grep test to new test infrastructure and add a few more test for
  grep.
diff --git a/testsuite/busybox.tests b/testsuite/busybox.tests
index 91dbc79..7595d06 100755
--- a/testsuite/busybox.tests
+++ b/testsuite/busybox.tests
@@ -7,6 +7,9 @@
 if [ ${#COMMAND} -eq 0 ]; then COMMAND=busybox; fi
 . testing.sh
 
+# Depends on nothing
+_BB_CONFIG_DEP=""
+
 # We'll assume "cat" is built in, because we need some other command to test.
 
 HELPDUMP=`$COMMAND`