* lib/rake/*: Updated to rake 0.9.5

* test/rake/*:  ditto.
* NEWS:  ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38003 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rake/trace_output.rb

@@ -0,0 +1,19 @@
+module Rake
+  module TraceOutput
+
+    # Write trace output to output stream +out+.
+    #
+    # The write is done as a single IO call (to print) to lessen the
+    # chance that the trace output is interrupted by other tasks also
+    # producing output.
+    def trace_on(out, *strings)
+      sep = $\ || "\n"
+      if strings.empty?
+        output = sep
+      else
+        output = strings.map { |s| s.end_with?(sep) ? s : s + sep }.join
+      end
+      out.print(output)
+    end
+  end
+end