Push fix to SCons build to build Windows DLL to trunk (r2828)

git-svn-id: http://v8.googlecode.com/svn/trunk@2829 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/SConstruct b/SConstruct
index 71673c0..ddd0190 100644
--- a/SConstruct
+++ b/SConstruct
@@ -258,6 +258,10 @@
     'all': {
       'WARNINGFLAGS': ['/WX', '/wd4355', '/wd4800']
     },
+    'library:shared': {
+      'CPPDEFINES': ['BUILDING_V8_SHARED'],
+      'LIBS': ['winmm', 'ws2_32']
+    },
     'arch:ia32': {
       'WARNINGFLAGS': ['/W3']
     },