roll gyp 1431:1439

r1432 Modify RegenerateAppendFlag() to skip duplicate values in environment values
r1433 When linking an executable, add the -F options.
r1434 Add support for CONFIGURATION_NAME to ninja.
r1435 Fixing failing gyp-test-multiple-values.
r1436 Make sure OutputDirectory, IntermediateDirectory, and TargetPath have their slashes
r1437 ninja windows: support basic generation of manifests at link time
r1438 ninja windows: check correct condition for manifest warning
r1439 ninja windows: don't use /allowisolation with a .def file

TBR=thakis@chromium.org,steveblock@chromium.org,bradnelson@google.com,iannucci@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10821025

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@148509 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -128,7 +128,7 @@ deps = {
     (Var("googlecode_url") % "grit-i18n") + "/trunk@60",
 
   "src/tools/gyp":
-    (Var("googlecode_url") % "gyp") + "/trunk@1431",
+    (Var("googlecode_url") % "gyp") + "/trunk@1439",
 
   "src/v8":
     (Var("googlecode_url") % "v8") + "/trunk@" + Var("v8_revision"),