Fixed clean rule in rakefile.

Proposed new strategy for autotest

[git-p4: depot-paths = "//src/ZenTest/dev/": change = 2411]

Rakefile

@@ -94,5 +94,5 @@ end
 
 desc 'Clean up'
 task :clean => [ :clobber_rdoc, :clobber_package ] do
-  rm_rf %w(*~ doc)
+  rm_f Dir["**/*~"]
 end

lib/autotest.rb

@@ -22,6 +22,15 @@
 # * Implementation files must match up with a test file named
 #   test_.*implementation.rb
 
+# New (proposed) strategy:
+#
+# 1) find all files and associate them from impl <-> test
+# 2) run all tests
+# 3) scan for failures
+# 4) detect changes in ANY (ruby?) file, rerun all failures + changed files
+# 5) until 0 defects, goto 3
+# 6) when 0 defects, goto 2
+
 class Autotest
 
   def self.run