Fix frogsh + Windows + test.dart take 2

tools/testing/perf_testing/perf_README.txt

 Setup to run all performance tests:
 
 TODO(efortuna): run through these steps again on a clean machine to make sure I
 didn't leave anything out!
 
 Overview:
  These are the instructions to run a wide variety of performance tests using 
  dart/tools/testing/perf_testing/create_graph.py. Currently the results are 
  uploaded to https://dartperf.googleplex.com/. 
  
@@ skipping 74 matching lines @@
     b) copy the file in /Library/Preferences/com.apple.Safari.plist to 
        $DARTDIR/tools/testing/com.apple.Safari.plist
        (We do this because Safari deletes our preferences (on no pop-up 
        blocking) if it crashes (aka times out) two times in a row.)
 
 If you just want smoketests, you're done! Run them by typing:
 
 $> tools/testing/bin/$YOUR_OS_DIR/dart tools/test.dart --component=webdriver
 --report --timeout=20 --mode=release --browser=[ff | safari | chrome | ie]
 [--frog=path/to/frog/executable/like/Release_ia32/dart-sdk/frogc
---froglib=path/to/frog/lib/like/dart/frog/lib]
+--froglib=path/to/frog/lib/like/dart/frog/lib] test_to_run(like "language" or

[Emily Fortuna, 2012/01/23 23:04:46]

I incorporated your comments from this CL:
https://chromiumcodereview.appspot.com/9272003/

+"corelib")
 
 (If you don't specify frog and froglib arguments, we default to using the frogsh
 living in your frog directory.)
 
 ========= Proceed further only if you also want to run performance tests.======
 
-10)Add the following to your DEPS file in all.deps in the "deps = {" section:
-  # Copy of Python appengine latest release version
-  "dart/third_party/appengine-python/1.5.4":
-    "http://googleappengine.googlecode.com/svn/trunk/python@199",
+10)Download appengine for Python and place it in third_party (http://code.google.com/appengine/downloads.html#Google_App_Engine_SDK_for_Python):
+  "dart/third_party/appengine-python/"
 
 11)Install matplotlib http://matplotlib.sourceforge.net/
 
 12)Pull down benchmarks from internal repo (Google only): 
    http://chromegw.corp.google.com/viewvc/dash/trunk/internal/browserBenchmarks/README.txt?view=markup
 
 13)TODO(efortuna): Deal with appengine check in! Run 
    '../../../third_party/appengine-python/1.5.4/appcfg.py update appengine/' 
    while standing in dart/tools/testing/perf_tests.
 
 14) Run the tests! While standing in dart/tools/testing/perf_testing, run 
     $> python create_graph.py --forever --verbose 
     to run all the tests (browser performance, language correctness in the
     browser, command line performance, and self-hosted compile time and compiled
     code size). 
     
     You can run individual tests by adding the particular option (such as 
     --language) when running create_graph.py. Type "create_graph.py -h" for a 
     full list of the options.