Added ApplyEnvOverrides to samples build. This makes the build work on Windows

when the PATH to cl.exe is specified through env overrides. Changed explicit
EVN update with call to ApplyEnvOverrides


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@213 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

SConstruct

@@ -467,7 +467,7 @@ def BuildSpecific(env, mode, env_overrides):
   for sample in context.samples:
     sample_env = Environment(LIBRARY=library_name)
     sample_env.Replace(**context.flags['sample'])
-    sample_env['ENV'].update(**context.env_overrides)
+    context.ApplyEnvOverrides(sample_env)
     sample_object = sample_env.SConscript(
       join('samples', 'SConscript'),
       build_dir=join('obj', 'sample', sample, target_id),

samples/SConscript

@@ -31,6 +31,7 @@ Import('sample context')
 def ConfigureObjectFiles():
   env = Environment()
   env.Replace(**context.flags['sample'])
+  context.ApplyEnvOverrides(env)
   return env.Object(sample + '.cc')
 
 sample_object = ConfigureObjectFiles()