Don't enable WPO on Win64 and require Server 2003 / x64 for win64

build/standalone.gypi

Index: build/standalone.gypi
diff --git a/build/standalone.gypi b/build/standalone.gypi
index b09122b538e33b27ada26fac414cf007656c8e7d..aee7832c2d9130d77dc9d38ac6389153890afad4 100644
--- a/build/standalone.gypi
+++ b/build/standalone.gypi
@@ -313,9 +313,15 @@
           },
           'VCLibrarianTool': {
             'AdditionalOptions': ['/ignore:4221'],
+            'conditions': [
+              ['v8_target_arch=="x64"', {
+                'TargetMachine': '17',  # x64
+              }, {
+                'TargetMachine': '1',  # ia32
+              }],
+            ],
           },
           'VCLinkerTool': {
-            'MinimumRequiredVersion': '5.01',  # XP.
             'AdditionalDependencies': [
               'ws2_32.lib',
             ],
@@ -340,6 +346,13 @@
                   'advapi32.lib',
                 ],
               }],
+              ['v8_target_arch=="x64"', {
+                'MinimumRequiredVersion': '5.02',  # Server 2003.
+                'TargetMachine': '17',  # x64
+              }, {
+                'MinimumRequiredVersion': '5.01',  # XP.
+                'TargetMachine': '1',  # ia32
+              }],
             ],
           },
         },